TY - GEN AU - Gorsuch, Joseph W... [et al.] eds. ED - SYMPOSIUM ON ENVIRONMENTAL TOXICOLOGY AND RISK ASSESSMENT: AQUATIC, PLANT, AND TERRESTRIAL (1992: Pittsburg) TI - Environmental toxicology and risk assessment: 2nd volume SN - 0803114850 PY - 1993/// CY - Philadelphia PB - ASTM KW - TOXICOLOGY-ENVIRONMENTAL KW - RISK ASSESMENT KW - TOXIC MATERIALS ER -