000 00270nam a2200109Ia 4500
008 220201s1961 xx 000 0 eng d
100 _aRICH L G
245 0 _aUNIT OPERATION OF SANITARY ENGINEERING
260 _aNEW YORK
_bWILEY PUB
_c1961
300 _a308
942 _2ddc
999 _c89211
_d89211