TY  - REP
AU  - Griffith,D.R.
AU  - Mannering,J.V.
AU  - Richey,C.B.
ED  - Agriculture and Energy
TI  - Energy requirements and areas of adaptation for eight tillage-planting systems for corn
U1  - 78-288199 
PY  - 1977///
KW  - Cultivation
KW  - AGROVOC
KW  - Maize
KW  - Zea mays
T2  - Lockeretz, W. (ed.). Agriculture and energy. Proceedings of a conference. New York (USA). Academic Press. 1977. p. 261-276
ER  -