TY  - BOOK
AU  - Cottenie,A.
ED  - United Nations.
TI  - Soil and plant testing as a basis of fertilizer recommendations
SN  - 9251009562
U1  - 631 
PY  - 1980///
CY  - Rome
PB  - Food and Agriculture Organization
KW  - Fertilizers
KW  - Soil amendments
KW  - Soil fertilizers
KW  - Agricultural chemicals
KW  - Soil conditioners
N1  - Includes bibliography: p. 55-58
ER  -