TY  - BOOK
TI  - Advances in agronomy. V 01
U1  - 631/635 
PY  - 1949///
CY  - New York
PB  - Academic
KW  - Agronomy
KW  - Fertilizers
KW  - Soil microorganism
KW  - Soil phosphorus
KW  - Weed control
ER  -