| |
| 1992 | ||
|---|---|---|
| 3 | Margaret Beckman, Ellen M. Pearson: Understanding the Needs of Users: The Timeliness Factor. Essen Symposium 1992: 307-320 | |
| 1989 | ||
| 2 | Ellen M. Pearson: Conference Summary. Essen Symposium 1989: 221-224 | |
| 1988 | ||
| 1 | Ellen M. Pearson: The Impact of CD-Rom on Library Operations: To Buy or to Make - One Library's Experience Producing a Catalogue on CD-Rom. Essen Symposium 1988: 133-139 | |
| 1 | Margaret Beckman | [3] |