Kottman, Richard Norman. Reciprocity and the North Atlantic triangle, 1932-1938 / by Richard N. Kottman. - Ithaca, N.Y. : Cornell University Press, 1968. - ix, 294 p. ; ISBN: SSCE3169 Subjects--Topical Terms: Reciprocity. Dewey Class. No.: 382.911821 / Re