[033-010] Prehistoric Villages and Camp Sites on the Peoria, Illinois Lake Area
Prehistoric Villages and Camp Sites on the Peoria Illinois Lake Area Author: Buis, A.R.
[033-009] Soil Conservation in Illinois in Relation to the AAA Program
Soil Conservation in Illinois in Relation to the AAA Program Author: Whalin, Oren L.
[003-008] Vocational Agriculture in a Permanent Program of Agricultural Improvement
Vocational Agriculture in a Permanent Program of Agricultural Improvement Author: Tomlin, B.A.
[003-007] Probable Effect of Weeds on the Fertility of Soils
Probable Effect of Weeds on the Fertility of Soils Author, Snider, H.J.
[033-006] The Military Tract and its Agriculture
The Military Tract and its Agriculture Author: Oathout, C.H.