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Pesticides Monitoring Journal|September 1, 1980
Pesticides in ground water beneath irrigated farmland in Nebraska, August 1978R F Spalding, G A Junk, J J Richard
Talanta|January 1, 1984
Simplified determination of polycyclic aromatic hydrocarbonsM J Avery, J J Richard, G A Junk
Pesticides Monitoring Journal|December 1, 1975
Analysis of various Iowa waters for selected pesticides: atrazine, DDE, and dieldrin-1974J J Richard, G A Junk, M J Avery, et al.
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