TY  - BOOK
AU  - International Superphosphate and Compound Manufacturer`s Association
TI  - Phosphorus in Agriculture. No 58-59, 62, 64-68(1971- 1976)
U1  - 631.8505 
PY  - 1971///
CY  - London
PB  - International Superphosphate and Compound Manufacturer`s Association
N1  - International Superphosphate and Compound Manufacturer`s Association: Phosphorus in Agriculture. No 58-59, 62, 64-68(1971- 1976).  London.  International Superphosphate and Compound Manufacturer`s Association, 1971.--(631.8505INT)
ER  -