TY  - BOOK
AU  - Sparks, Donald L 
TI  - Advances in agronomy
T2  - Advances in agronomy
SN  - 0120007975
U1  - 630 
PY  - 2001///
CY  - San Diego ; ,  London : 
PB  - Academic Press
KW  - Agronomy.
KW  - Crops
KW  -  Genetic engineering
KW  - Soil science
N1  - Includes bibliographical reference and index
ER  -