Intergovernmental Conference on Environmental Edication, organized by Unesco in co-operation with UNEP Tblisi (USSR) 14-26 Oct 1977 : Final report
| Format: | TEXT |
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| Language: | B 577.4 Int i |
| Published: |
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| Format: | TEXT |
|---|---|
| Language: | B 577.4 Int i |
| Published: |
|