TY  - BOOK
AU  - Wentzell,E.S.
TI  - Operations research : a methodological approach / 
SN  - 5030032278
U1  - 003 
PY  - 1983/// (rep. 1988)
CY  - Moscow : 
PB  - Mir Publishers , 
KW  - OPERATION RESEARCH
N1  - Includes bibliography and index
ER  -