Optimum organization and operation of Oklahoma county grain elevators with sidel
Knop, D.R., Blakley, L.V.
Optimum organization and operation of Oklahoma county grain elevators with sidel - Oklahoma 1970 - 39 p. - No. B-682; Oklahoma Agricultur .
Optimum organization and operation of Oklahoma county grain elevators with sidel - Oklahoma 1970 - 39 p. - No. B-682; Oklahoma Agricultur .