TY - BOOK AU - Salant,Stephen W. AU - Eswaran,Mukesh AU - Lewis,Tracy R. ED - Research and Development Corporation, TI - The length of optimal extraction programs when depletion affects extraction costs T2 - The Rand paper series PY - 1982/// CY - Santa Monica, California PB - Rand Corporation KW - Natural resources KW - Mathematical models KW - Mines and mineral resources N1 - Includes bibliographical references: page 14 ER -