TY  - BOOK
ED  - Chinese Academy of Agricultural Science
TI  - Proceedings of the international symposium on balanced fertilization / 
SN  - 710901648X
U1  - 581.718640202 22
CY  - China
PB  - Chinese Academy of Agricultural Science , 
KW  - Sulfur in agriculture
KW  - Botany
N1  - Includes bibliographical references
ER  -