> Verlagsreihe
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27:
Ground water in western and central Europe United Nations Department of Technical Co-operation for Development
New York: United Nations, 1991
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24:
Ground water in eastern and northern Europe Department of Technical Co-operation for Development
New York, N.Y.: United Nations, 1990
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20:
River and lake basin development proceedings of the United Nations Interregional Meeting on River and Lake Basin Development with emphasis on the Africa region ; Addis Ababa, Ethiopia, 10-15 October 1988 United Nations Department of Technical Co-operation for Development
New York, NY: United Nations, 1990
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15:
Ground water in continental Asia (Central, Eastern, Southern, South-Eastern Asia) Department of Technical Co-operation for Development
New York: United Nations, 1986
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13:
Treaties concerning the utilization of international water courses for other purposes than navigation Africa = Traités concernant l'utilisation des cours d'eau internationaux à des fins autres que la navigation : Afrique Department of Technical Co-operation for Development
New York: United Nations, 1984
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10:
Experiences in the development and management of international river and lake basins proceedings of the United Nations Interregional Meeting of International River Organizations, Dakar, Senegal, 5 - 14 May 1981 United Nations, Department of Technical Co-operation for Development
New York, NY: United Nations, 1981