| 其他書名 | Seedling Ratios of Lodgepole Pine by Habitat Type and Seedbed Preparation Technique |
| 出版 | Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1977 |
| URL | http://books.google.com.hk/books?id=BulgZ0HW7awC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |