Suchergebnisse - Timmons, John F. 1912-

Ownership of Iowa's farmland

von Strohbehn, Roger W., Timmons, John F. 1912-

Soil erosion control in process in Western Iowa: progress and problems

von Blase, Melvin G., Timmons, John F. 1912-

Identification and measurement of inefficiencies in leasing systems: (an application of linear programming)

von DeBenedictis, Michele, Timmons, John F. 1912-

Land problems and policies

Weitere beteiligte Personen: “… Timmons, John F. 1912- …”