1. Public Works Engr., Dept. of Public Works, Baltimore, Md.; formerly Grad. Student, Dept. of Civ. Engrg., Clarkson College of Technology, Potsdam, N.Y.
2. Assoc. Prof. of Civ. Engrg., Clarkson College of Technology, Potsdam, N.Y.
3. Public Health Engr., Westchester County Dept. of Health, White Plains, N.Y.; formerly Grad. Student, Dept. of Civ. Engrg., Clarkson College of Technology, Potsdam, N.Y.