Farm work simplification
Vaughan, L.M., Hardin, L.S.
Farm work simplification by L.M. Vaughan and L.S. Hardin - New York 1949 - 145 p.
Farming
631 / V 367 F
Farm work simplification by L.M. Vaughan and L.S. Hardin - New York 1949 - 145 p.
Farming
631 / V 367 F