Open-air schools,
Kingsley, Sherman Colver, 1866-
Open-air schools, by Sherman C. Kingsley ... and F. B. Dresslar ... - Washington, Govt. print. off., 1917. - 283 p. illus. (incl. plans) 23 cm. - U.S. Bureau of education. Bulletin no. 23, 1916 . - United States. Bureau of Education. Bulletin ; no. 23, 1917. .
e 18000111
Open-air schools.
L111 / .A6 1916, no. 23
Open-air schools, by Sherman C. Kingsley ... and F. B. Dresslar ... - Washington, Govt. print. off., 1917. - 283 p. illus. (incl. plans) 23 cm. - U.S. Bureau of education. Bulletin no. 23, 1916 . - United States. Bureau of Education. Bulletin ; no. 23, 1917. .
e 18000111
Open-air schools.
L111 / .A6 1916, no. 23