TY - BOOK ED - National Toxicology Program (U.S.) TI - Annual report on carcinogens SN - 0272-2836 AV - RC268.6 .N38a U1 - 616.99/4071 PY - 1980///- CY - [Washington, D.C.?] PB - Dept. of Health and Human Services KW - Carcinogens KW - Periodicals KW - Local KW - Carcinogenicity testing N1 - "Pursuant to section 301(b) (4) of the Public Health Service Act as amended by section 262, PL 95-622."; Report for 1980 issued in 2 vols; Vol. for 1981- distributed to depository libraries in microfiche ER -