Apter, David E. Some conceptual approaches to the study of modernization / [by] David E. Apter. - Englewood Cliffs, N.J. : Prentice-Hall, 1968. - vii, 380 p. illus. 24 cm. Bibliographical footnotes. Subjects--Topical Terms: Political science. Dewey Class. No.: 320 / APS 1968