1. Supervising Agriculturalist and Chf., Water Resour. Devel. Sect., Water Resour. Mgmt. Div., Bureau of Soils and Water Mgmt., Diliman, Quezon City, Philippines 1104.
2. Prof., Natural Resour. Engrg., Envir. Mgmt. and Des. Div., Lincoln Univ., Canterbury, New Zealand.