TY  - BOOK
AU  - Schweigman,C.
TI  - OperationsResearch Problems in Agriculture in Developing Countries
SN  - 9976  1  0107 4
AV  - 630.7/SCH 1
U1  - 630.7/SCH 
PY  - 1985///
CY  - Khartoum
PB  - Tanzania Publishing House
ER  -