| 其他書名 | With Relevance to Forest Operations and Techniques ; Cost Effective Early Thinnings, Concerted Action #AIR2-CT93-1538 |
| 出版 | Danish Forest and Landscape Research Institute, 1994 |
| URL | http://books.google.com.hk/books?id=goPiPgAACAAJ&hl=&source=gbs_api |