00484nam a22001697a 4500 BD-DhUL 20170411190113.0 170411s1974 nyu||||| |||| 00| 0 eng BD-DhUL BD-DhUL 333.91 UNN United Nations. Economic and social council Natural systems of water administration / United Nations New York : United Nations 1974. 183 ; 25 cm. Report ddc REF 177680 177680 0 0 ddc 0 333_910000000000000_UNN 1 REF 314219 DUL DUL UNC 2017-04-11 Gift 333.91 UNN D8655 2017-04-11 2017-04-11 REF