School grounds and play /
Curtis, Henry S. 1870-1954.
School grounds and play / by Henry S. Curtis. - Washington : G.P.O., 1922. - 31 p. ; 23 cm. - Bulletin / Department of the Interior, Bureau of Education ; 1921, no. 45 . - Bulletin (United States. Bureau of Education) ; 1921, no. 45 .
Bibliography: p. 31.
e 22000266
Playgrounds--United States.
Play--United States.
L111 / .A6 1921, no. 45
School grounds and play / by Henry S. Curtis. - Washington : G.P.O., 1922. - 31 p. ; 23 cm. - Bulletin / Department of the Interior, Bureau of Education ; 1921, no. 45 . - Bulletin (United States. Bureau of Education) ; 1921, no. 45 .
Bibliography: p. 31.
e 22000266
Playgrounds--United States.
Play--United States.
L111 / .A6 1921, no. 45