1. Research Fellow, St. Anthony Falls Hydr. Laboratory, Univ. of Minnesota, Minneapolis, Minn.
2. Asst. Prof. of Hydraulics, Instituto di Idraulica del Politecnico, Milan, Italy.
3. Asst. Prof. in Aeronautics, School of Eng., The Johns Hopkins Univ., Baltimore, Md.
4. Research Associate, Iowa Inst. of Hydr. Research. State Univ. of Iowa, Iowa City, Iowa.
5. Cons. Engr., Austin, Tex.
6. Instr., Civ. Eng. Dept., Georgia Inst. of Technology, Atlanta, Ga.