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3. Dillon, R. F., & Tombaugh, J. Providing help to Telidon users. In R. F. Dillon (Chair),Psychological research in the development of Telidon, Symposium presented at the meeting of the Canadian Psychological Association, Toronto, 1981.
4. McEwen, S. A., An investigation of user search performance on a Telidon information retrieval system,Teiidon Behavioural Research 2. Ottawa, Canada: Department of Communications, 1981.
5. McEwen, S. A., & Tombaugh, J.Comparison of two information retrieval methods on videotex: Tree-structure versus alphabetical directory. Manuscript submitted for publication, 1981.