International Symposium on Methods and Instrumentation for the Investigation of Groundwater Systems (1983 : Noordwijkerhout, The Netherlands)
Date
1983
Series
Verslagen en mededelingen (Nederlandse Centrale Organásatie voor Toegepast-Natuurwetenschappelijk Onderzoek. Commissie voor Hydrologisch Onderzoek) ; no. 31
International Conference on the Organization of Research and Training in Africa in Relation to the Study, Conservation, and Utilization of Natural Resources (1964 : Lagos, Nigeria) (Lagos)
International Conference on the Organization of Research and Training in Africa in Relation to the Study, Conservation, and Utilization of Natural Resources (1964 : Lagos, Nigeria) (Lagos)
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