000 00345nam a2200133Ia 4500
008 221122s9999 xx 000 0 und d
082 _a556.024 N63
100 _aUnesco
245 0 _aPreparatory meeting of experts in the field of scientific hydrology
260 _bUnesco
_aParis
_c1963
300 _a40 p.
650 _aHydrology
942 _cH
999 _c10821
_d10821