title:Yearbook of International Organizations 2011/2012 - Vol 2: Geographical Index: A Country Directory of Secretariats and Memberships
29th edition. Volume 2 of 6 volumes. Also available Online, 12th edition
title:Yearbook of International Organizations 2011/2012 - Vol 1: Organization Descriptions and Cross-References
48th edition. Volume 1 of 6 volumes. Also available Online, 12th edition
title:International Congress Calendar
51st edition, 4 volumes
title:Yearbook of International Organizations 2010-2011 - Vol 6: Who's Who in International Organizations
4th edition. Volume 6 of 6 volumes. Also available Online, 11th edition
title:Yearbook of International Organizations 2010-2011 - Vol 5: Statistics, visualizations and patterns
10th edition. Volume 5 of 5 volumes. Also available Online, 11th edition
title:Yearbook of International Organizations 2010-2011 - Vol 4: Bibliographic Volume: International Organization Bibliography and Resources
15th edition. Volume 4 of 6 volumes. lso available Online, 11th edition. Erratum: This volume was printed with the incorrect title on the cover: "Yearbook of International Associations"; correct title is "Yearbook of International Organizations"
title:Yearbook of International Organizations 2010-2011 - Vol 3: Subject Volume: Global Action Networks: classified directory and index
28th edition. Volume 3 of 6 volumes. Also available Online, 11th edition
title:Yearbook of International Organizations 2010-2011 - Vol 2: Geographic Volume: International Organization Participation: country directory of secretariats and membership
28th edition. Volume 2 of 6 volumes. Also available Online, 11th edition
title:Yearbook of International Organizations 2010/2011 - Vol 1: Organization descriptions and cross-references
47th edition. Volume 1 of 6 volumes. Also available Online, 11th edition
title:Yearbook of International Organizations 2009-2010 - Vol 6: Who's Who in International Organizations
3rd edition. Volume 6 of 6 volumes. Also available Online, 10th edition
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