TY - BOOK AU - Muckstadt,John A. AU - Digby,James F. ED - Research and Development Corporation, TI - Some approximations in multi-item, multi-echelon inventory systems for recoverable items T2 - The Rand paper series PY - 1976/// CY - Santa Monica, California PB - Rand Corporation KW - Inventories KW - Mathematical models KW - METRIC (Computer program language) N1 - Includes bibliographical references (page 34) ER -