000 002780000a22001210004500
245 _aHydrology of deltas : proceedings of the symposium
260 _aParis
_bUnesco
_c1970
300 _a2 v.
500 _a491 p.
080 _a551.482(063)
_bS9
041 _aEN
942 _cBK
999 _c101942
_d101942