00377nam a22001097a 4500008004100000050002100041100002700062245009600089260004500185300001800230500001900248201008b           ||||| |||| 00| 0 eng d  aTD 430 .K47 1990  aKenneth D. Kerrid1990  aOperation of wastewater treatment plants.bA field study training programcKenneth D. Kerri  acarlifoniabhornet foundation inc.c1990  ax,504p.bill.  aincludes index