000 006040000a22001930004500
008 151229t1985 xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a628.515
_bG5
942 _cBK
100 _aGilliom, Robert
100 _aAlexander, Richard B.
100 _aSmith, Richard A.
245 _aPesticides in the nations rivers, 1975-1980, and implications for future monitoring
260 _aAlexandria
_bU.S. Geological Survey
_c1985
300 _a30 p., ill.
440 _aU.S. Geological Survey water-supply paper ; 2271
650 _aWATER POLLUTION-PESTICIDE EFFECTS
650 _aRIVERS
999 _c127243
_d127243