TY  - BOOK
AU  - Richard i. Levin, Davids. Rubin, Joelp.Stinon
AU  - Richard i. Levin, Davids. Rubin, Joelp.Stinon
TI  - Quantitive Approaches to managemtn 
PY  - 1992///
CY  -  Singapore
PB  - Mcgraw-Hill, Inc, 
ER  -