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| - a, Chile, and Peru, 1921-1923 (ACP). 83.6 Photographic negatives of illustrations on such subjects as land economics, production and marketing, farm conditions, acreage, and agricultural finance, prepared by BAE for use in the Department of Agriculture yearbooks, 1921-1934 (YB). 83.7 Filmstrips on general and World War II related agricultural subjects, 1939-1944 (FS).
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