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Alphabetical index of categories: P

a b c d e f g h i j k l m n o P q r s t u v w x y z

Number of information resources is shown in parentheses after each term.

P -> phosphorus (4) pagodas -> towers (1) paleobotany (2) paleoceanography (7) paleoclimate -> climate change (69) paleogeography (1) paleomagnetic analysis (3) invertebrate paleontology (1) paleontology (21) vertebrate paleontology (5) paleoseismology (4) paleotectonic maps (6) -> tectonic processes -> maps and atlases paleozoology -> paleontology (21) palm groves -> woods (1) oil palm plantations -> agricultural sites (6) palm tree reserves -> reserves (6) palynology (4) pampas -> grasslands (11) pamphlets, brochures, and booklets -> reports (106) papers (publications) -> reports (106) parasitism -> symbiosis (1) parasitology (2) parishes -> countries, 2nd order divisions (1) park gates -> parks (15) park headquarters -> buildings (13) parking lots -> parking sites (1) parking sites (1) industrial parks -> industrial sites (3) marine parks -> parks (15) national parks -> parks (15) parks (15) provincial parks -> parks (15) state parks -> parks (15) urban parks -> parks (15) parkways -> roadways (2) public participation in scientific research -> citizen science programs (2) particle-beam spectroscopy (1) particle-size analysis -> grain-size analysis (3) atmospheric deposition (chemical & particulate) (9) atmospheric deposition (chemical and particulate) -> atmospheric deposition (chemical & particulate) (9) land partitioning systems -> cadastral and legal land descriptions (1) partnerships (38) pastoral sites -> agricultural sites (6) pastures -> agricultural sites (6) ice patches -> ice masses (9) pathobiology -> pathology (26) pathology (26) patrol posts -> buildings (13) pavilions -> buildings (13) Pb -> lead (8) PCBs -> industrial pollution (25) peaks -> mountain summits (1) peat cutting areas -> wetlands (39) peatlands -> wetlands (39) pedogenesis -> soil formation (2) pedology (soils) -> soil sciences (5) peninsulas -> capes (1) percolation (1) permafrost (2) permeability (1) soil permeability -> permeability (1) pest control (1) pesticide and herbicide contamination (24) petroleum (79) petroleum basins -> mineral deposit areas (92) petroleum fields -> oil fields (1) petroleum resources (gas) -> natural gas resources (96) petroleum resources (oil) -> oil resources (90) petrology (3) water pH (11) pH (water) -> water pH (11) pharmaceutical contamination (3) phenology (11) phosphate works -> industrial sites (3) phosphorus (4) phosphorus content -> nutrient content (water) (27) photogrammetry -> remote sensing (117) aerial photographs (14) -> aerial photography -> image collections photographs (25) -> image collections -> photography scientists-at-work photographs (2) -> scientific careers -> image collections aerial photography (34) photography (49) satellite photography -> visible light imaging (5) underwater photography (3) aerial photos (14) -> image collections -> aerial photography air photos (14) -> image collections -> aerial photography phycology (3) phylogeny -> paleontology (21) physical oceanography -> ocean sciences (51) biological and physical processes (743) physiographic features (237) physiography -> land surface characteristics (52) physiological processes (8) anatomy and physiology (6) physiology -> anatomy and physiology (6) phytoplankton (1) picnic areas -> parks (15) pictures -> image collections (102) piers (1) pine groves -> woods (1) pitches (physiographic) -> physiographic features (237) open pit mines -> mine sites (15) gravel pits -> mine sites (15) placer deposit mining (1) placer mines -> mine sites (15) placers -> mineral deposit areas (92) governed places -> administrative areas (8) populated places (7) religious populated places -> populated places (7) halting places (transportation) -> transportation features (4) coastal plains -> coastal zones (77) plains (1) plains ecosystems -> grassland ecosystems (16) planetariums -> buildings (13) planetary bodies (10) planetary sciences (8) planetology -> planetary sciences (8) plankton (5) planktonic ecosystems (4) -> aquatic ecosystems -> plankton emergency response planning -> hazard preparedness (67) environmental planning -> natural resource management (273) planning reports -> reports (106) strategic plans (6) plant and animal tagging (7) plant and animal testing (5) banana plantations -> agricultural sites (6) cotton plantations -> agricultural sites (6) oil palm plantations -> agricultural sites (6) plantations -> agricultural sites (6) rubber plantations -> agricultural sites (6) sisal plantations -> agricultural sites (6) sugar plantations -> agricultural sites (6) tea plantations -> agricultural sites (6) animal and plant census (21) plant distribution -> biogeography (73) cement plants -> industrial sites (3) distribution of plants -> biogeography (73) electric plants -> power generation sites (1) filter plants -> waterworks (1) filtration plants -> waterworks (1) flowering plants (8) gas-oil separation plants -> industrial sites (3) munitions plants -> industrial sites (3) non-vascular plants -> nonvascular plants (6) nonvascular plants (6) nuclear power plants -> power generation sites (1) ore treatment plants -> industrial sites (3) power plants -> power generation sites (1) processing plants -> industrial sites (3) sewage treatment plants -> waterworks (1) steam plants -> power generation sites (1) treatment plants -> buildings (13) vascular plants (10) water plants -> waterworks (1) water treatment plants -> waterworks (1) plants (industrial) -> industrial sites (3) plants (organisms) (24) inductively coupled plasma-atomic emission spectrometry -> atomic emission spectroscopy (4) plateaus (2) plate tectonics -> tectonic processes (21) platforms (continental margins) -> continental margins (11) platinum (1) playgrounds -> parks (15) plazas -> buildings (13) plot sampling (2) Plutonic rocks (1) Pm -> prometium (5) podcasts -> sound recordings (4) points (physiographic) -> capes (1) polar bears -> bears (9) polders -> physiographic features (237) police posts -> buildings (13) policies and regulations (7) political areas (1) administrative and political boundaries (5) political boundaries -> administrative and political boundaries (5) dependent political entities -> political areas (1) independent political entities -> political areas (1) political entities -> political areas (1) semi-independent political entities -> political areas (1) pollen analysis -> faunal and floral census (microscopic) (3) pollination (3) pollinators (3) air pollution (7) -> contamination and pollution -> atmospheric composition contamination and pollution (182) industrial pollution (25) nonpoint-source pollution (11) pollution -> contamination and pollution (182) soil pollution (1) -> soil resources -> contamination and pollution water pollution (13) -> contamination and pollution -> water resources polychlorinated biphenyls -> industrial pollution (25) polymerase chain reaction (4) pond ecosystems -> freshwater ecosystems (29) beaver ponds -> lakes (36) fish ponds -> lakes (36) intermittent ponds -> lakes (36) intermittent salt ponds -> lakes (36) ponds -> lakes (36) salt evaporation ponds -> lakes (36) salt ponds -> lakes (36) tailing ponds -> disposal sites (2) intermittent pools -> lakes (36) pools (water bodies) -> lakes (36) populated localities -> populated places (7) populated places (7) population (human) (9) population and community ecology (381) population dynamics (35) population energetics -> population and community ecology (381) biological population management (47) wildlife population management (22) porosity (1) soil porosity -> porosity (1) portages -> transportation features (4) ports -> harbors (4) global positioning measurement -> GPS measurement (8) posters (17) border posts -> buildings (13) customs posts -> buildings (13) patrol posts -> buildings (13) police posts -> buildings (13) trading posts -> buildings (13) potable water -> drinking water use (4) potassium (1) potassium-argon analysis (1) potentiometric surface -> groundwater level (27) potholes -> physiographic features (237) animal pounds -> buildings (13) power generation sites (1) solar power generation sites -> power generation sites (1) windmill power generation sites -> power generation sites (1) hydroelectric power generation water use -> power generation water use (5) power generation water use (5) thermoelectric power generation water use -> power generation water use (5) powerhouses -> power generation sites (1) nuclear power plants -> power generation sites (1) power plants -> power generation sites (1) powerpoint -> presentation materials (3) hydroelectric power stations -> power generation sites (1) power stations -> power generation sites (1) ppl -> populated places (7) Pr -> praseodymium (5) prairie ecosystems -> grassland ecosystems (16) prairies -> grasslands (11) praseodymium (5) acid precipitation -> acid deposition (6) precipitation (atmospheric) (33) precipitation measurement (10) -> field inventory and monitoring -> precipitation (atmospheric) predators -> carnivores (6) earthquake prediction -> earthquake probabilities (18) volcanic eruption prediction (6) prefectures -> administrative areas (8) earthquake preparedness (23) fire preparedness (4) -> fires -> hazard preparedness flood preparedness (7) -> floods -> hazard preparedness hazard preparedness (67) landslide preparedness (7) -> hazard preparedness -> landslides tsunami preparedness (6) -> tsunamis -> hazard preparedness presentation materials (3) oral presentations -> speeches and testimony (1) data preservation (3) ecosystem preservation -> ecosystem management (26) preserves -> reserves (6) press releases -> news releases (11) fire prevention -> fire control (2) primitive areas -> reserves (6) earthquake probabilities (18) electron probe microanalysis -> particle-beam spectroscopy (1) conference proceedings (3) proceedings -> reports (106) atmospheric and climatic processes (166) bioenergetic processes -> biological and physical processes (743) biogeochemical processes -> biogeochemical cycling (14) biological and physical processes (743) coastal processes (32) ecological processes (100) environmental processes -> ecological processes (100) estuarine processes (2) fluvial processes -> streamflow (157) geochemical processes (18) geologic processes (315) hydrologic processes (250) hydrothermal processes (6) hyporheic zone processes -> groundwater and surface-water interaction (5) legal processes -> laws and regulations (2) ocean processes (43) physiological processes (8) slope processes (30) tectonic processes (21) processing plants -> industrial sites (3) production buildings -> industrial sites (3) biological productivity (1) degradation products (chemical) -> pesticide and herbicide contamination (24) product support -> customer support and user feedback (4) product types (692) acoustic doppler current profiler -> acoustic doppler current profiling (2) seismic profiles -> seismic methods (44) acoustic doppler current profiling (2) computer program -> scientific software (30) computer programming -> software development (1) programming -> software development (1) citizen science programs (2) contract research programs -> external research support (4) interagency programs (47) interdisciplinary programs (6) international programs (9) science programs (124) map projections -> map coordinate systems (3) prometium (5) promontories -> capes (1) atmosphere properties -> atmospheric properties (21) atmospheric properties (21) earth material properties (8) water properties (84) water properties (marine) -> marine chemistry (5) geotechnical properties maps (2) -> maps and atlases -> engineering geology prospecting -> natural resource exploration (12) protected areas -> reserves (6) protectorates -> administrative areas (8) protists (5) protozoans -> protists (5) provincial parks -> parks (15) proving grounds -> research facilities (4) Pt -> platinum (1) lists of publications -> catalogs and indexes (96) serial publications -> reports (106) public buildings -> buildings (13) public participation in scientific research -> citizen science programs (2) public use areas -> parks (15) public water supply -> domestic water use (9) published series -> reports (106) publishing (3) pueblos -> populated places (7) pyroclastic -> volcanic rocks (6) pyroclastic flows -> volcanic activity (68)

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