Towards 2000 A.D. human life and resource management : proceedings of the symposium on Natural Resources, May 19, June 3-4, 1976.
| Fformat: | Llyfr |
|---|---|
| Cyhoeddwyd: |
[Tagaytay City]
DAP
1976.
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| Pynciau: |
| Fformat: | Llyfr |
|---|---|
| Cyhoeddwyd: |
[Tagaytay City]
DAP
1976.
|
| Pynciau: |