000 00290nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aViessman (Warren) etc
245 0 _aIntrod to hydrology
260 _b"Harper and aRow, New York"
260 _c1977
365 _b22.50
942 _cBK
999 _c203668
_d203668