Landis, Wayne G Hughes, Jane S. Lewis, Michael A. text Philadelphia, PA ASTM c1993 monographic 431 p. : ill. ; 24 cm "February 1993"--T.p. verso Papers based on the First Symposium on Environmental Toxicology and Risk Assessment held in Atlantic City, N.J., 14-16 April, 1991 "ASTM publication code number (PCN) 04-011790-16." Pollution Health risk assessment Environmental health Environmental Health Environmental Monitoring Environmental Pollutants 615 AST 1993 A042 Or. 0803118600