TY - BOOK AU - Duckworth,W.E. AU - Gear,A.E. AU - Lockett,A.Geoffrey TI - A guide to operational research SN - 0412135000 (pbk) U1 - 658.40301 23 PY - 1977/// CY - London PB - Chapman and hall KW - Operations research N1 - Includes index; Includes bibliographies ER -