The Fourth world : victims of group oppression : eight reports fr om the field work of the Minority Rights Group / edited by Ben Whita ker. - London, Sidgwick and Jackson, 1972. - 342 p., leaf. : l illus., maps.; 23 cm. Includes bibliographiecal references. ISBN: 0283978791 LCCN: 73-157253 Subjects--Topical Terms: Minorities--Case studies.Oppression (Psychology)--Case studies. Dewey Class. No.: 323.11