| 其他書名 | The Northeastern Forest Soils Conference, 1939-1988 |
| 出版 | Massachusetts Agricultural Experiment Station, College of Food and Natural Resources, University of Massachusetts at Amherst, 1988 |
| URL | http://books.google.com.hk/books?id=scgDXDb-7jUC&hl=&source=gbs_api |