Cooperation in agriculture ...Willet M. Hays, United States. 61st Cong. Senate · First published 1910Open the Tome
Agriculture, Industries And Home Economics In Our Public SchoolsWillet M. Hays · First published 1908Open the Tome
Report on statements of Dr. Cyril G. Hopkins relative to Bureau of SoilsWillet M. Hays · First published 1907Open the Tome
