| 其他書名 | A Biographical Index of Those who Have Collected Herbarium Material of Flowering Plants and Ferns Between Cape Verne and Lake Chad, and from the Coast to the Sahara at 180 N |
| 出版 | éditeur non identifié, 1971 |
| URL | http://books.google.com.hk/books?id=QIwbzwEACAAJ&hl=&source=gbs_api |