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Environmental NGOs in developing countries : information about environmental non-governmental organizations (NGOs) : suggestions for cooperation / comp. and ed. by H.P. van der Wulp.
- State university of Leiden. Centre for environmental studies,
- 1984.
- Leiden :
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Land use possibilities on the Kafue flats, Zambia / M. Marchand, E. Wisse, C.A. Drijver.
- 865.41
- State university of Leiden. Centre for environmental studies,
- 1983.
- Leiden :