00345nam a2200121 a 450000500170000008200150001710000140003224500650004625000110011126000350012230000270015763000390018420251203092035.0  a658.5bKUM  aKumar, B.  aIndustrial engineeringbA Text-book for engineering students  a6th ed  aDelhibKhanna Publishersc1997  axvi, 811p.b20 cm.cPB  aManagement, Industrial engineering