TY  - JA
AU  - Lockeretz,W.
AU  - Wernick,S.
TI  - Commercial organic farming in the Corn Belt in comparison to conventional practices [USA]
SN  - 0036-0112
U1  - 81-653352 
PY  - 1980///
KW  - Energy resources and management
KW  - Fertilizers
KW  - AGROVOC
KW  - USA
KW  - Soil fertility
N1  - Bibliography p. 720-722
T2  - Rural Sociology
ER  -