TY - BOOK AU - Edwards,Everett Eugene TI - References on agricultural history as a field for research T2 - United States. Dept. of Agriculture. Library. Bibliographical contributions AV - Z5075.U5 E225 PY - 1937///] CY - Washington, D.C. : U. S. Dept. of Agriculture, Library KW - Agriculture KW - United States KW - History KW - Bibliography N1 - Mimeographed; Contribution from the Bureau of Agricultural Economics; Includes index ER -