000 00280nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aGaspar and Oncescu
245 0 _aRadio - active tracers in hydrology
260 _bElse
260 _c1972
365 _b95.00
942 _cBK
999 _c201750
_d201750