000 00374nam a2200145Ia 4500
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041 _aENG
082 _a621
_bRI-U
100 _aRich, Linvil Gene
245 0 _aUnit operators of sanitary engineering
250 _a1st Ed.
260 _c1961
_aNew York
_bJohn Wiley & Sons.Inc
650 _aGENERAL ENGINEERING
942 _cBK
999 _c1051
_d1051