| 其他書名 | Containing Descriptions of All the Spermatophytes and Pteridophytes Known to Grow Wild in the Area Within 35 Kilometers of Pullman, Washington |
| 出版 | Washington Agricultural College and School of Science, 1901 |
| URL | http://books.google.com.hk/books?id=y1Q-AQAAMAAJ&hl=&source=gbs_api |