History of agricultural extension work in the United States, 1785-1923
True, A.C.
History of agricultural extension work in the United States, 1785-1923 - washington 1928 - 1-220 p. - History, Agriculture United States Department of Agriculture. Miscellaneous Publication No. 15 .
History of agricultural extension work in the United States, 1785-1923 - washington 1928 - 1-220 p. - History, Agriculture United States Department of Agriculture. Miscellaneous Publication No. 15 .