Carr, Edward Hallett, 1892-1982. The twenty years' crisis, 1919-1939; an introduction to the study of international relations, by Edward Hallett Carr. - New York, Harper & Row [1964, c1946] - xii, 243 p. 21 cm. - Harper torchbooks. The Academy library, TB 1122 . LCCN: Subjects--Topical Terms: International relations.World politics.