20th Waigani Seminar 1993 Programme : from Rio to Rai, Environment and development ; 22-27 August 1993 University of papua New Guinea.
- Waigani : University of Papua New Guinea, 1993.
- 27 p.
20th Waigani Seminar Programme from 22-27 August 1993.
20th Waigani Seminar Programme from 22-27 August 1993.