TY  - REP
AU  - Morris,R.A.
TI  - Determining optimum fertilizer recommendations
SN  - 971-104-0
U1  - 85-108014 
PY  - 1983///
KW  - Fertilizers
KW  - AGROVOC
KW  - Soil fertility
N1  - 6 ill.; 6 tables
ER  -