TY  - BOOK
ED  - Food and Agriculture Organisation of the United Nations.
TI  - Improved use of plant nutrients
SN  - 9251005834
U1  - 631.81 21st ed.
PY  - 1978///
CY  - Rome
PB  - Food and Agriculture Organisation of the United Nations
KW  - Nutrients
KW  - Plants
ER  -