1. Prof. of Civ. Engrg., Univ. of Queensland, St. Lucia, Queensland, Australia
2. Hydr. Engr., Dept. of Transport and Works, Darwin, Australia
3. Student, Dept. of Civ. Engrg., Univ. of Queensland, St. Lucia, Queensland, Australia
4. Sr. Planning Officer; Cooordinator General's Dept., Queensland, Australia