TY  - BK
AU  - Bordeaux,A.F.Jr
AU  - Bradford,G.L.
AU  - Sutton,R.W.
TI  - No-tillage and minimum-tillage corn production systems:  a costs and returns evaluation
T2  - Series -Agricultural Economics Extension Information
PY  - 1971///
CY  - (USA)
PB  - Agricultural Economics Extension Information, 
ER  -