00267nam a2200097Ia 4500008004100000082002000041100003100061245004200092260002500134300001000159260813b        |||||||| |||| 00| 0 eng d  a333.91bG786.WP  aGreat Britain. H. M. S. O.  aWater pollution control technologyb/  aLondon:bHMSO,c1979  a165p.