1. 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 Author(s): Eliot, Martha M. (Martha May), 1891-1978, author Publication: Washington : United States Government Printing Office, 1933 Subject(s): Rickets -- epidemiologyArm Bones -- diagnostic imagingSunlightInfantChildPuerto Rico -- epidemiology