004000000a22001450004500020001500000060000800015082001500023100002100038100001900059245005500078260003800133260000900171300000800180650006600188  a0442210418  a100  a628.11 GEH  aBregman, Jacob I  aGehm, Harry  W  aHand book of water resources and pollution control  aNewyork, Van Nostrand Reinhold Co  c1976  a840  aWater supply engineering/ sewage  disposal/ water - pollution