1. Asst. Prof., Dept. of Civ. and Environ. Engrg., Washington Univ., St. Louis, Mo.; Formerly Grad. Stud., State Univ. of N. Y. at Buffalo, Dept. of Civ. Engrg., Buffalo, N.Y.
2. Prof., Dept. of Civ. Engrg. State Univ. of N.Y. at Buffalo, Buffalo, N.Y.