00313cam a22001217a 4500008004000000082001400040100001800054245005000072250001200122260002600134300001000160650002100170180718b1956   xxu||||| |||| 00| 0 eng d  aX816 B113  aBabbitt, H.E.  aSewerge and wewage treatmentcby H.E. Babbitt  a7th ed.  aNew YorkbWileyc1956  a674p.  aSewage Treatment