000 00284nam a2200121Ia 4500
008 220201s1979 xx 000 0 eng d
082 _a627
_bGUP
100 _aGupta, B Lal
245 0 _aWater resources engg hydrology
260 _bStandard Pub
_c1979
300 _a639
942 _2ddc
999 _c82062
_d82062