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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
Wildlife studies, Patuxent Wildlife Research Center Wildlife studies, Patuxent Wildlife Research Center
No abstract available.
Authors
L.F. Stickel
1963 progress report: Pesticide-bald eagle relationships 1963 progress report: Pesticide-bald eagle relationships
To sum up, we know that DDT in sufficient quantity will kill eagles. We know that wild eagles carry body burdens of DDT, and that some of this is transferred to the egg by the females. We do not know that the levels in the egg are sufficient to affect hatching; nor do we know that body burdens in wild eagles are sufficiently high to be detrimental. Certainly, however, we have no evidence...
Authors
J.L. Buckley, J.B. DeWitt
Association and determinacy in geomorphology Association and determinacy in geomorphology
You find a rock. It looks like an ordinary piece of flint, broken and rough. On a part of it is a patina whose soft grey color contrasts with the shiny brownish surfaces of conchoidal fracture. You could have found this rock in nearly any kind of an environment almost anyplace in the world. There is nothing distinctive about it. You hand this same piece of rock to a colleague and ask...
Authors
Luna Bergere Leopold, Walter Basil Langbein
Food-habits procedures Food-habits procedures
No abstract available.
Authors
A. C. Martin, L.J. Korschgen
Measuring hunting and other mortality Measuring hunting and other mortality
No abstract available.
Authors
A. D. Geis, R.D. Taber
The Northeastern states as a separate waterfowl management unit The Northeastern states as a separate waterfowl management unit
No abstract available.
Authors
W.F. Crissey
Wildlife management concepts compatible with mosquito suppression Wildlife management concepts compatible with mosquito suppression
No abstract available.
Authors
P. F. Springer
Wildlife studies, Patuxent Wildlife Research Center, 1961-62 Wildlife studies, Patuxent Wildlife Research Center, 1961-62
No abstract available.
Authors
J.B. DeWitt, W. H. Stickel, P. F. Springer
Field Trip 2: San Francisco to Monterey via California Highways 1, 5, 17 and connecting routes Field Trip 2: San Francisco to Monterey via California Highways 1, 5, 17 and connecting routes
No abstract available.
Authors
E. E. Brabb, O.E. Bowen, E.W. Hart
Geology of the northern Santa Cruz Mountains, California Geology of the northern Santa Cruz Mountains, California
No abstract available.
Authors
J.C. Cummings, R.M. Touring, E. E. Brabb
Diatremes and uranium deposits in the Hopi Buttes, Arizona Diatremes and uranium deposits in the Hopi Buttes, Arizona
The Hopi Buttes diatremes erupted in a shallow lake that was filled in as volcanic activity progressed in Pliocene time. At the end of the period of volcanism the landscape included low lava domes capping some of the diatremes, a few flows, and numerous craters of the maar type, surrounded by rims of volcanic debris with gentle exterior slopes that merged with the surrounding plain...
Authors
Eugene Merle Shoemaker, C. H. Roach, F. M. Byers
Effects on wildlife Effects on wildlife
No abstract available.
Authors
J.B. DeWitt, D.G. Crabtree, R.B. Finley, J.L. George