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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
Filter Total Items: 6173
Calcium-Carbonate hardness of public water supplies in the conterminous United States Calcium-Carbonate hardness of public water supplies in the conterminous United States
Geographic variations in the hardness of water seem to parallel the geographic variations in certain cardiovascular diseases (Anderson and others, 1969; Biorck and others, 1965; Schroeder, 1966). Winton and McCabe (1970) have provided a recent review of the problem. The map, presented here, showing calcium-carbonate hardness of municipal raw-water sources in the conterminous United...
Authors
Barbara M. Anderson
Evaluation of a hand-reared mallard release program in Maryland Evaluation of a hand-reared mallard release program in Maryland
No abstract available.
Authors
Vernon D. Stotts, A. D. Geis, G.V. Burger
Inland fisheries Inland fisheries
Today's inland commercial fisheries are small independent operational units widely dispersed on lakes, impoundments, and streams throughout the vast central plains. The problems of the fisheries are diverse and unique to local conditions. Inland fisheries are particularly important to the Nation in times of international conflict because they are distributed throughout the area and the...
Authors
Louella E. Cable
Petroleum possibilities of Yukon-Koyukuk Province, Alaska: region 1 Petroleum possibilities of Yukon-Koyukuk Province, Alaska: region 1
The Yukon-Koyukuk province covers 100,000 sq mi (259,000 sq km) along the west coast of Alaska, extending from the Brooks Range to the Yukon delta, but excluding the Seward Peninsula. It is essentially a vast tract of Cretaceous rocks locally veneered by Quaternary alluviated beds and volcanic rocks. The Cretaceous section contains a large volume of volcanic rocks, and most of the...
Authors
William W. Patton
Polychlorinated biphenyl interference in pesticide residue analysis Polychlorinated biphenyl interference in pesticide residue analysis
No abstract available.
Authors
W. L. Reichel
Population and harvest surveys Population and harvest surveys
No abstract available.
Authors
A. D. Geis
Sea lampreys in the Great Lakes of North America Sea lampreys in the Great Lakes of North America
The movement of sea lampreys into the upper Great Lakes (Superior, Michigan, and Huron) initiated a series of biological changes which have extended beyond the fish directly attacked by the parasite. The threat posed by the sea lamprey was not generally recognized until it was well established in all the lakes and had seriously affected the fisheries in Lakes Huron and Michigan. As the...
Authors
Bernard R. Smith
Variations in the biological vulnerability of birds to insecticides Variations in the biological vulnerability of birds to insecticides
No abstract available.
Authors
James O. Keith
Surface faulting and related effects Surface faulting and related effects
No abstract available.
Authors
Manuel G. Bonilla