000 00272nam a22001097a 4500
999 _c6491
_d6491
008 190909b ||||| |||| 00| 0 eng d
020 _a0123394503
082 _a307.76 HEL
100 _aHELLY WATER
245 _aURBAN SYSTEMS MODELS
260 _aNEW YORK
_bACADEMIC PRESS
_c1975