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56 American Public Health Association, American Water Works Association, and Water Environment Federation. Standard Methods for the Examination of Water and Wastewater, 21st ed. American Public Health Association, Washington, D.C., 2005. Grant, D. M. and B. D. Dawson. ISCO Open Channel Flow Measurement Handbook, 4th ed., 1995. Johnson, J. J., N. Varney, and M. S. Switzenbaum. Comparative Toxicity of Formulated Glycol Deicers and Pure Ethylene and Propylene Glycol, University of Massachusetts/Amherst, Water Resources Research Center, August, 2001. Levelton Consultants, Limited. NCHRP Report 577: Guidelines for the Selection of Snow and Ice Control Materials to Mitigate Environmental Impacts. Transportation Research Board of the National Academies, Washington, D.C., 2007. Liptak, B. Instrument Engineersâ Handbook, Third Edition: Process Control, CRC Press, 2003. Schaepman, I. pH Measurement Using ISFET Technology. LabPlus International, 2005. U.S. EPA. Methods for Chemical Analysis of Water and Wastes, EPA-600/4-79-020, 1983. References
