[Report of] Technical Assistance Mission No. 18.
保存先:
| 団体著者: | |
|---|---|
| フォーマット: | 図書 |
| 言語: | English |
| 出版事項: |
Paris,
1952.
|
| シリーズ: | OEEC documentation
|
| 主題: |
目次:
- pt. 1. Timber: American forest operations and increase of European productivity
- pt. 2. Ecology of American forest species. Erosion and reafforestation.