TY  - BOOK
TI  - Advances in agronomy. V 51, V 52, V 53
U1  - 631/635 
PY  - 1993///
CY  - New York
PB  - Academic Press
KW  - Crop rotation
KW  - Gypsum
KW  - Poultry waste management
KW  - Soil water relations
KW  - Tillage conservation
KW  - Water conservation
KW  - Wetland soils
ER  -