Seeking stability in a volatile environment : technical papers of the 20th Congress of the Association of Surveyors of Papua New Guinea held in Rabaul from the 1st July to the 5th July, 1985 /
edited and produced by B.J. Walsh.
- Lae : PNG University of Technology, Dept. of Surveying 1985.
- 233 p.
Surveying--Papua New Guinea.
Surveying--Papua New Guinea.