Olson William c The theory and practice of international relations. [Editors:] David S. McLellan, William C. Olson [and] Fred A. Sondermann. - Englewood Cliffs, N.J. Prentice-Hall 1960. - 542 p. LCCN: 60012289 /L Subjects--Topical Terms: International relations--Collections. LC Class. No.: JX1391 / .M318 Dewey Class. No.: 327.082