00282nam a2200109Ia 450000500170000000800410001708200140005810000190007224500300009126000430012130000080016420260224041043.0260224s9999||||xx |||||||||||||| ||und||  a628.1 BAB  aBabbitt, H.E.  0aWater supply engineering   aNew York: Mc-Graw-Hill Book Co,.c1962  a672