| Occasional paper - IUFRO [1024-414X] |
| Full text available via Free E- Journals |
| Available from 1995 volume: 1 |
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| Occasional paper - Royal College of General Practitioners [1352-2450] |
| Full text available via PubMed Central |
| Available from 1990 until (and including) 2012 issue: 89 |
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| Health Sciences: Public health |
| Occasional paper series [1607-1484] |
| Full text available via Free E- Journals |
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| Occasional paper series [1725-6534] |
| Full text available via Free E- Journals |
| Available from 2000 volume: 1 |
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| Occasional Paper Series - Institute of Public Finance [1331-1743] |
| Full text available via Free E- Journals |
| Available from 1997 volume: 1 |
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| Business, Economy and Management: Economics |
| Social Sciences: Developmental Issues & Socioeconomic Studies |
| Social Sciences: Regional and International Studies |
| Occasional Papers [1608-5000] |
| Full text available via Free E- Journals |
| Available from 1997 |
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| Occasional Papers / European Union Institute for Security Studies |
| Full text available via Free E- Journals |
| Available from 1997 |
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| Occasional Papers from the Law School, the University of Chicago |
| Full text available via Free E- Journals |
| Available from 1997 issue: 38 until (and including) 2008 issue: 47 |
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| Law: General and Others |
| OCCASIONAL PAPERS IN OPEN AND DISTANCE LEARNING [1038-8958] |
| Full text available via Free E- Journals |
| Available from 1989 volume: 8 |
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| Occasional Papers in Public Administration and Public Policy (NISPAcee) [1335-5945] |
| Full text available via Free E- Journals |
| Available from 2002 volume: 3 issue: 4 until (and including) 2006 volume: 6 issue: 2 |
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| Occasional Papers in Shaykhi, Babi and Baha'i Studies |
| Full text available via Free E- Journals |
| Available from 1997 |
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| Occasional Papers in Sociology and Anthropology [2091-0312] |
| Full text available via Free E- Journals |
| Available from 1987 until (and including) 2009 |
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| Occasional papers in the study of Sudanese languages |
| Full text available via Free E- Journals |
| Available from 1981 |
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| Occasional papers - Museum, Texas Tech University [0149-175X] |
| Full text available via Free E- Journals |
| Available from 1972 volume: 1 |
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| Life Sciences: Zoology |
| Occasional papers of the Africa Institute [0065-387X] |
| Full text available via Free E- Journals |
| Available from 2008 |
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| Arts and Humanities: History |
| Occasional papers of the California Academy of Sciences [0068-5461] |
| Full text available via Free E- Journals |
| Available from 1890 volume: 1 until (and including) 1993 volume: 148 |
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| Life Sciences: General and Others |
| Occasional Papers of the KURCSP |
| Full text available via Free E- Journals |
| Available from 1983 |
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| Occasional papers of the Museum of Natural Science [1050-4842] |
| Full text available via Free E- Journals |
| Available from 1989 issue: 64 |
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| Life Sciences: Zoology |
| Occasional papers of the Museum of Zoology, University of Michigan [0076-8413] |
| Full text available via Free E- Journals |
| Available from 1913 |
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| Life Sciences: Zoology |
| Occasional papers on mollusks [0073-0807] |
| Full text available via Free E- Journals |
| Available from 1945 volume: 1 issue: 1 until (and including) 1998 volume: 5 issue: 76 |
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| Life Sciences: Zoology |