TY  - BOOK
AU  - International Potash Institute
TI  - Potassium in tropical crops and soils
U1  - 631.806 
PY  - 1974///
PB  - International Potash Institute
N1  - International Potash Institute: Potassium in tropical crops and soils.  International Potash Institute, 1974.--(631.806INT)
ER  -