@article{480397, recid = {480397}, author = {Stubbart, John M.}, title = {AWWA wastewater operator field guide [electronic resource] /}, publisher = {American Water Works Association,}, address = {Denver, Colo. :}, pages = {vii, 443 p. :}, year = {2006}, note = {Includes index.}, url = {http://library.usi.edu/record/480397}, }