Title:
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Application of geographic information systems in hydrology and water resources management : proceedings of an international conference held in Vienna, Austria, from 19 to 22 April 1993 ... jointly organized by the International Commission on Groundwater of the International Association of Hydrological Sciences, ... UNESCO ..., Universitat fur Bodenkultur, Vienna / edited by K. Novar, H.P. Nachtnebel.
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