Physiologic involution in normal aging man : a bibliography of literature, 1956-1960 Aging Washington, D.C. : U.S. Dept. of Health, Education, and Welfare, [1960] Bocker, Dorothy, 1888- National Library of Medicine (U.S.) Bibliography Text 29 p. nlm:nlmuid-60030780R-bk 60030780R http://resource.nlm.nih.gov/60030780R English The National Library of Medicine believes this item to be in the public domain : https://creativecommons.org/publicdomain/mark/1.0/