000 00318nam a2200121Ia 4500
008 220201s1991 xx 000 0 eng d
041 _aENG
100 _aI.S: 8987-1978
245 0 _aECOLOGY OF WATER SUPPLY & TREATMENT
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1991
300 _a389
942 _2ddc
999 _c58553
_d58553