TY - BOOK AU - Gupta,Prem Kumar AU - Hira,D.S. TI - Operations research SN - 8121902819 U1 - 519.92 22 PY - 1998///.[Reprinted 1999] CY - Ram Nagar, New Delhi : PB - S. Chand & Company Ltd., KW - Linear programming KW - Operations research N1 - Includes bibliographies and index ER -