TY - BOOK AU - Buffa, Elwood Spencer, AU - Dyer, James S., ED - ED - ED - ED - TI - : model formulation and solution methods SN - 0471058513 (hardcover) SN - 2 PY - 1981///;copyright 1981.46 CY - New York PB - John Wiley & Sons KW - KW - 2 KW - 0 KW - 6 KW - 20 KW - Operations research.;Management N1 - Includes bibliographical references and index; 5; Professional ER -