Carr, Edward Hallett, The twenty years' crisis, 1919-1939 : an introduction to the study of international relations / by Edward Hallett Carr. - London : Macmillan ; 1939 [reprinted 1961] - xv, 312 p. ; ISBN: TBB880 Subjects--Topical Terms: International relations Dewey Class. No.: 327.09042 / Tw,2