The effect of tropical sunlight on the development of bones of children in Puerto Rico
Subtitle: a roentgenographic and clinical study of infants and young children with special reference to rickets and related factors
By: by Martha M. Eliot ...
Contributors: United States. Children's Bureau.
Publisher: U.S. Govt. print. off.
Published: 1933
Place of publication: Washington
Language: eng
Number of pages: 122
Notes: At head of title: United States Department of labor.  Frances Perkins, secretary.  Children's bureau.  Grace Abbott, chief.