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By "Jenss, Rachel M. (Rachel Marie), 1903-1993"
Methods of assessing the physical fitness of children; a study of certain methods based on anthropometric, clinical, and socioeconomic observations made of 713 7-year old white boys and girls in New Haven, Conn., over a period of 19 or 20 months during 19 by Rachel M. Jenss and Susan P. Souther.
By: Jenss, Rachel M. - Souther, Susan Page,
Publication info: Washington,U.S. Govt. print. off.,1940.
Contributed by: Boston Public Library (archive.org)