TY - BOOK ED - General accounting offfice, GAO TI - Hazardous materials. Inadequate safeguards over sales pose health and environmental dangers T2 - GAO/NSIAD-90-70 PY - 1990/// CY - Washington KW - pollution KW - chemicals KW - environment KW - hazardous material UR - http://www.gao.gov/browse/date/week ER -