TY  - BOOK
ED  - Colloquim on International potash Institute
ED  - International potash Institute
TI  - Fertlizer use and portein production: Proceedings of the 11th Colloquim on International potash Institute held in Ronne-Bornholm/Denmark, 1975
U1  -  631.5 
PY  - 1975///
CY  - Ronne-Bornholm, Denmark
PB  - International Potash Institute
KW  - Agricultural ecology
KW  - Field crops
N1  - Includes bibliographical references and index
ER  -