Subjects: POLLUTION risk assessment; HEALTH risk assessment; POLLUTIONCHINA
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Subjects: BIOPESTICIDES; AGRICULTURE; CROPSCHINASOCIETY of Chemical Industry (Great Britain)
Subjects: GRAIN yields; WINTER wheat; WHEATCHINA
Subjects: LAND cover; FARMS; FARM managementCHINA
Subjects: *Heavy metal toxicology; *Heavy metals removal (Sewage purification); *FarmsChina
Subjects: AGRICULTURE; STOCHASTIC frontier analysis; LOGARITHMIC functionsCHINA
Subjects: PREVENTIVE medicine; WHEAT; LABOR productivityCHINA
Subjects: *Sustainable agriculture; *Agriculture; *ManuresShandong Sheng (China); China
Subjects: DRY farming; WINTER wheat; WHEATCHINA
Subjects: PHOSPHATE fertilizers; CORN; PHOSPHORUSCHINA