| 其他書名 | A Threat to Intensive Management of Ponderosa Pine in the Rocky Mountain Area and Southwest |
| 出版 | Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1977 |
| URL | http://books.google.com.hk/books?id=MbIY8Xs1qCsC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |