TY - BOOK AU - Colberg,Marshall Rudolph AU - Forbush,Dascomb Ramsey AU - Whitaker,Gilbert R. TI - Business economics: principles and cases PY - 1981/// CY - Homewood, Ill. PB - R.D. Irwin KW - Managerial economics KW - Local N1 - 921016; Includes bibliographical references and index ER -