Some personal, economic, and sociological factors influencing dairymen's actions
Hess, C.V., Miller, L.F.
Some personal, economic, and sociological factors influencing dairymen's actions - Pennsylvania 1954 - 30 p. - No. 577; Pennsylvania Agricul .
Some personal, economic, and sociological factors influencing dairymen's actions - Pennsylvania 1954 - 30 p. - No. 577; Pennsylvania Agricul .