by Effie G. Bathurst, senior specialist in curriculum problems. Federal security agency, Paul V. McNutt, administrator. U. S. Office of education, J. W. Studebaker, commissioner.
|Main Author:||Bathurst, Effie G. 1886-|
Washington : U.S. Govt. print. off., 1940.
School field trips.
Natural resources > Natural resources / United States.
United States > United States / Economic conditions > United States / Economic conditions / 1918-1945.
v, 106 p.,
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