NATIONAL 805,133 NTP [National Toxicology Program] technical report on the toxicology and carcinogenesis :studies of phenolphthalien (cas no. 77-09-8) in F344/N rats anf B6C3F1 mice (feed studies) / National Toxicology Program ; U.S. Department of Health and Human Services ; Public Health Service ; National Institutes of Health. - Research Triangle Park, NC : NIH. 1996. - 348 s., [3] k. tabl. : il., wykr; 28 cm