[Bethesda, Md.] : U.S. Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health ; Washington, D.C. : For sale by Supt. of Docs., U.S. G.P.O., [1980]
Papers and proceedings of the conference sponsored by the Center for Population Research of National Institutes of Health and the World Health Organization at the Pan American Health Organization, Washington, D.C., 7-11 March 1977.