TY - BOOK AU - Eliot,Martha M. ED - United States. TI - The effect of tropical sunlight on the development of bones of children in Puerto Rico: a roentgenographic and clinical study of infants and young children with special reference to rickets and related factors, AV - HD741 .A32 no. 217 PY - 1933/// CY - Washington PB - U.S. Govt. print. off. N1 - At head of title: United States Department of labor. Frances Perkins, secretary. Children's bureau. Grace Abbott, chief ER -