Ball, M. Margaret The OAS in transition [by] M. Margaret Ball. - Durham, N.C. Duke University Press 1969. - xxii, 721 p. map. 920803 Bibliography: p. [666]-695. LCCN: 70086475 //r90 Subjects--Corporate Names: Organization of American States. LC Class. No.: F1402 / .B27 Dewey Class. No.: 341.18/18/12