TY  - BOOK
AU  - U.M Cowgill
AU  -  L. R Williams
TI  - Aquatic toxicology and hozard assessmen
PY  - 1989///
CY  - Philadelphia
PB  - ASTM
KW  - Aquatic animals
KW  - Aquatic plants
KW  -  Water pollution - toxicology
N1  - Includes bibliographical references and index
ER  -