Classification scheme for illustrative material;
visual instruction and editorial work, Office of cooperative extension work, U.S. Department of agriculture, October 1, 1930.
|Corporate Author:||United States.|
[Washington, D.C., 1930?]
Classification of exhibits
Autographed from typewritten copy, with printed title.
153 numb. L.
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|Item Link||Original Source|
|Full view||University of Michigan|