TY  - BOOK
AU  - Norman, Arthur Geoffrey,
ED  - American Society of Agronomy
TI  - Advances in agronomy
SN  - 0065-2113
U1  - 631 BRA 1987 A055 Or. 
CY  - New York
PB  - Academic Press
KW  - Agriculture
N1  - Editor: v. 1-   A. G. Norman
ER  -