TY  - BOOK
AU  -  Moyle S.Williams and John W.Conston.
TI  - Crop production levels and fertilizer use
U1  - 633.002:631.816  K2 
PY  - 1962///
CY  - Rome
PB  - FAO
KW  - Conston, John W.
KW  - Williams, Moyle, S.
KW  - Fertilizers,Crop yield
ER  -