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International conference of donors for the economic reactivation and development of the Republic of Equatorial Guinea, Geneva, April 1982 / prep. by the National commission designated by the Government of Equatorial Guinea.
- Equatorial Guinea. Government,
- 1982.
- [S.l.] :
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Hidden wealth : mineral exploration techniques in tropical forest areas : proceedings of a symposium on mineral exploration techniques in tropical forest areas held in Caracas, Venezuela, November 19-23, 1977 / ed. by D.J.C. Laming and A.K. Gibbs.
- Association of geoscientists for international development,
- 1982.
- [S.l.] :