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2
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Artisanal fisheries of the Chad basin in Africa : an overview of research and annotated bibliography 1920-1990 / by Arthur E. Neiland...[et al.].
- FAO,
- 1992.
- Rome :
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Distribution and impact of helminth diseases of livestock in developing countries / H.J. Over, J. Jansen and P.W. van Olm.
- Food and Agriculture Organization of the United Nations,
- 1992.
- Rome :