TY  - BOOK
AU  - Sparks, Donald L
TI  - Advances in agronomy
SN  - 9780120007561
U1  - 630.72 SPA 
PY  - 1996///
CY  - Amsterdam ; San Diego
PB  - Elsevier / Academic Press
KW  - Agronomy
KW  - Crops
KW  - Soil management
N1  - Includes index
ER  -