| 其他書名 | 13th International Essen Symposium, 22 October-25 October 1990 : Festschrift in Honour of Margaret Beckman |
| 出版 | Universitätsbibliothek Essen, 1991 |
| ISBN | 092260214X9780922602148 |
| URL | http://books.google.com.hk/books?id=bgpBAAAAMAAJ&hl=&source=gbs_api |