| 其他書名 | Held Under Auspices of the Northeastern Forest Experiment Station and the Connecticut Agricultural Experiment Station at New Haven, Connecticut, September 15-16, 1953 |
| 出版 | Northeastern Forest Experiment Station, Forest Service, U.S. Department of Agriculture, 1954 |
| URL | http://books.google.com.hk/books?id=jC9BtwAACAAJ&hl=&source=gbs_api |