TY  - BOOK
ED  - Instituto Internacional de la Potasa
TI  - Transition from extensive to intensive agriculture with fertilizers: : proceedings of the VIIth. Colloquium of the International Potash Institute in Israel
U1  - 631.8 
PY  - 1969///)
CY  - Berne
PB  - Instituto Internacional de la Potasa
KW  - Fertilizantes
ER  -