| Content Type | OA ? | PCA ? | 
|---|---|---|
| Books (Back List, Front List) | No | Yes | 
| Titles start with O (15) | Information | 
|---|---|
| Our Man in Warszawa: How the West Misread Poland | Author/Editor: Jo Harper | 
| An Orderly Mess | Author/Editor: Nowotny, Helga | 
| Open Society Unresolved: The Contemporary Relevance of a Contested Idea | Author/Editor: Christof Royer ,Liviu Matei | 
| Open Government, Open Diplomacy: Conversations with a Former American Diplomat M. André Goodfriend | Author/Editor: M. André Goodfriend ,Istvan Hargittai | 
| On the Verge of Convergence: Social Stratification in Eastern Europe | Author/Editor: HENRYK DOMAŃSKI | 
| On the Margins | Author/Editor: Anton Weiss-Wendt | 
| On the East/West Slope | Author/Editor: Attila Melegh | 
| On Shaky Ground | Author/Editor: V. Domontovych ,Oksana Rosenblum | 
| One Woman in the War: Hungary 1944-1945 | Author/Editor: Alaine Polcz,Albert Tezla | 
| One Hundred Years of Communist Experiments | Author/Editor: Vladimir Tismaneanu ,Jordan Luber | 
| On Baltic Slovenia and Adriatic Lithuania | Author/Editor: Norkus, Zenonas | 
| The Oldest Legend | Author/Editor: Csepregi, Ildiko; Klaniczay, Gabor; Peterfi, Bence | 
| An Older and More Beautiful Belgrade: A Visual Chronicle of the Milošević Era | Author/Editor: Mileta Prodanović ,Maria Milojković ,Robert Horvitz ,Milena Dragićević Šešić | 
| Of Red Dragons and Evil Spirits | Author/Editor: Oto Luthar | 
| Objects of Remembrance: A Memoir of American Opportunities and Viennese Dreams | Author/Editor: Monroe E. Price |