TY  - SER
ED  - International Superphosphate Manufacturers' Association.
ED  - International Superphosphate and Compound Manufacturers' Association.
TI  - Phosphorus in agriculture
SN  - 0031-8434
AV  - S647 .I54a
U1  - 631.8/5 
CY  - [London]
PB  - International Superphosphate and Compound Manufacturers' Association
KW  - Phosphatic fertilizers
KW  - Periodicals
KW  - Phosphorus in agriculture
KW  - Soils
KW  - Phosphorus content
KW  - Plants
KW  - Effect of phosphorus on
KW  - fast
N1  - Issues called also 21st-36th year
ER  -