FINAL 804,976 Final environmental impact statement on NIH guidelines for research involving recombinant DNA molecules of June 23, 1976 / prep, by the Office of the Director National Institutes of Health Bethesda, Maryland. - [Bethesda] i U.S. Department of Health, Education, and Welfare Public Health Service NIH, October 1977. - 2 pt. ; 27 cm Pt. 1. - X, 137 s Pt. 2. - 437 s. pag. varia