| 其他書名 | Problems and Research Needs ... [Report Prepared for the Georgia Forestry Commission and the Southeastern Forest Experiment Station, U.S. Forest Services |
| 出版 | Georgia Forestry Commission, 1956 |
| URL | http://books.google.com.hk/books?id=1-MrAQAAMAAJ&hl=&source=gbs_api |