I. Measurements of pollution effects on living organisms. Bioassays to determine allowable waste concentrations in the aquatic environment.
D000818:Animals; D001681:Biological Assay / Q000592:standards*; D008722:Methods; D012623:Seawater / Q000032:analysis; D013997:Time Factors; D014867:Water / Q000032:analysis; D014871:Water Microbiology; D014876:Water Pollution / Q000032:analysis*
D014867:Water