Nellis, J. G. The essence of the economy / Joseph G. Nellis & David Parker. - Hemel Hempstead, U.K. : Prentice Hall International UK, 1990. - xii, 223cm. p. ; 23cm. - The prentice hall essence of management series. . ISBN: 0132846969 Subjects--Topical Terms: Economics. Dewey Class. No.: 330 / NEL