School grounds and play
By: by Henry S. Curtis.
Series: Bulletin / Department of the Interior, Bureau of Education ;; 1921, no. 45; Bulletin (United States. Bureau of Education) ;; 1921, no. 45
Publisher: G.P.O.
Published: 1922
Place of publication: Washington
Language: eng; ger
Number of pages: 31
Subjects: Playgrounds -- United States.; Play -- United States.
Notes: Bibliography: p. 31.