policies and planning : proceedings of the United Nations Interregional Seminar on "River Basin and Interbasin Development" convened from 16 to 26 September 1975 in Budapest, in co-operation with the United Nations Development Programme and the National Water Authority of Hungary United Nations Interregional Seminar on River Basin and Interbasin Development, Budapest, 1975. creator United Nations Development Programme Hungary Országos Vízügyi Foigazgatóság. text New York [United Nations] 1976 monographic 2 v. : ill. ; 29 cm. "United Nations publication sales no. E.77.II.A.4." Includes bibliographies. Water resources development Congresses Watersheds Congresses GB 1201 .U54 1975 333.9/102 9636020779 : 78317073 UOEL 000 20171031111838.0 000