Bibliography on peace research in history /Bibliographie sorélienne /Bibliographies on international relations and world affairs. An annotated directory.Führer durch die bolschewistische und antibolschewistische Literatur.Philippine bibliography. (1899-1946).The 1968 Czechoslovak crisis : a bibliography, 1968-1970 /Contribución a la Bibliografía anarquista de la América Latina hasta 1914 /Index to periodical literature on socialism /Latin American development. A selected bibliography (1950-1967).The labor problem : a bibliography /