TY - BOOK AU - Mitchell,Bridger M ED - Research and Development Corporation, TI - Specifying and estimating multi-product cost functions for a regulated telephone company T2 - The Rand paper series PY - 1978/// CY - Santa Monica, California PB - Rand Corporation KW - Telephone KW - United States KW - Estimates and costs N1 - Includes bibliographical references (page 9) ER -