000 00448nam a2200193Ia 4500
008 201126s9999 xx 000 0 und d
041 _aeng
100 _aGRAY, N F
245 _aWATER TECHNOLOGY
250 _a2nd;1stRep
260 _bBUTTER WORTH AND CO.
_c2006
300 _a0
490 _aREFERENCE
490 _aN
690 _aBIO - TECHNOLOGY ENGINEERING
690 _aBIO - TECHNOLOGY ENGINEERING
690 _aFET
999 _c1243
_d1243