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Start Over You searched for: Author ABDEL-FATTAH, AMR I. ✖Remove constraint Author: ABDEL-FATTAH, AMR I. Author KELLER, DAVID CHARLES ✖Remove constraint Author: KELLER, DAVID CHARLES Category Biological resources ✖Remove constraint Category: Biological resources Category Environmental monitoring and surveillance ✖Remove constraint Category: Environmental monitoring and surveillance Publication Year 1971 ✖Remove constraint Publication Year: 1971 Publication Year 1974 ✖Remove constraint Publication Year: 1974 Regulatory Agency EPA ✖Remove constraint Regulatory Agency: EPA Regulatory Agency USEPA ✖Remove constraint Regulatory Agency: USEPA
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