TY  - BOOK
AU  - Ignatieff, Vladimir (Ed.) 
AU  - Page, Harold J (Ed.) 
TI  - Efficient use of fertilizers 
T2  - FAO agricultural studies 
PY  - 1958///
CY  - Rome: 
PB  - Food and Agriculture Organization of the United Nations, 
KW  - Agriculture
KW  - Plant nutrients
KW  - Soil
ER  -