000 00345nam a2200133Ia 4500
008 140215s9999 xx 000 0 und d
084 _aL:555
_bRYA;1946
100 _aRyan, W J.
245 _aWater Treatment and Purification /
_b
260 _bMcGRAW-HILL BOOK CO. ,
_aLondon :
_c1946
300 _a270p :
650 _aHygiene
942 _2cc
_cBK
999 _c12897
_d12897