| 其他書名 | Tools for Planning GAD Workshops : Based on the Workshop Held 25 January-3 February 1992, Leicester Peak, Freetown, Sierra Leone |
| 出版 | German Adult Education Association (DVV), 1992 |
| URL | http://books.google.com.hk/books?id=udczAQAAIAAJ&hl=&source=gbs_api |