Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

164452 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 4908, results 122676 - 122700

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
High-performance, liquid-chromatographic method for the analysis of polynuclear aromatic hydrocarbons in water
William R. White, Rolland R. Grabbe
1981, Water-Resources Investigations Report 81-63
High-performance liquid chromatography provides a rapid and sensitive means for determining polynuclear aromatic hydrocarbons in water samples. A high-performance liquid chromatograph, coupled with ultraviolet or fluorescence detectors has greater selectivity for analysis than methods using gas-chromatographic and flame-ionization systems.Several natural water samples were fortified with mixtures of polynuclear aromatic hydrocarbons...
Biological and economic impact of stream alteration in the Virginia Piedmont
James B. Whelan
1981, FWS/OBS 81/33
A 31 month (September 1974 - March 1977) study was conducted on warmwater streams located in the Roanoke Creek watershed of the Piedmont Region of Virginia. The purpose of the study was to determine the effects of stream channelization on the aquatic/riparian wildlife resource and agricultural land-use patterns associated with...
Water resources data
Water Resources Division, U.S. Geological Survey
1981, Report, U.S. Geological Survey water-supply paper
No abstract available....
Water resources data
Water Resources Division, U.S. Geological Survey
1981, Report, U.S. Geological Survey water-data report
No abstract available....
Uptake and depuration of petroleum hydrocarbons by crayfish
I. Barry Tarshis
1981, Archives of Environmental Contamination and Toxicology (10) 79-86
No differences were noted in the amount of naphthalene uptake (approximately 125μg) by individual crayfish exposed for 1, 2, or 4 hr at 25°C in open, non-aerated glass jars containing 14C-naphthalene-5% of a water-soluble fraction (WSF) of No. 2 fuel oil. The cephalothorax, containing the hepatopancreas (a food absorption organ),...
Water resources data
Iowa Geological Survey
1981, Report, U.S. Geological Survey water-supply paper
No abstract available....
River basins of the United States: the Wabash
Water Resources Division, U.S. Geological Survey
1981, Report
This leaflet, one of a series on the river basins of the United States, contains information on the Wabash River Basin, including a brief early history, a description of the physical characteristics, and other statistical data. At present, other river basins included in the series are The Colorado, The Columbia,...
Maps for America: cartographic products of the U.S. Geological Survey and others
Morris M. Thompson
1981, Report
"Maps for America" was originally published in 1979 as a Centennial Volume commemorating the Geological Survey's hundred years of service (1879-1979) in the earth sciences. It was an eminently fitting Centennial Year publication, for, since its establishment, the Geological Survey has continuously carried on an extensive program of mapping to...