Abstract from 1968 Report of the Committee on Manpower Development and Utilization—Engineering and Sanitation Section, American Public Health Association von Clapp, Richard F., Adams, Harold S., Adrounie, V. Harry, Fleming, John R., Graber, Ralph C., Haettenschwiller, Alphonse, Hatlen, Jack B., Kelso, Gilbert L., Taylor, Darold W., Diddams, Edgar E., Erickson, Frederick K.

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