00426nam a2200157Ia 4500008004100000082001500041100001700056245002100073250000600094260004400100300000800144650003800152650003400190653002000224700002400244170901s1956    xx            000 0 und d  a628.3bI1S  aImhoff, Karl 0aSewage Treatment  a2  aLondonbJohn Wiley and Sons, Inc.c1956  a338  aEngineering and allied operations  aTechnology (Applied sciences)  aSewage disposal  aFair, Gordon Maskew