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246 p. , Includes index. 23 cm..
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Urbana-Champaign University of Illinois Graduate School of Library Science 1974 .
91 p. 24 cm..
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83 p. , Includes index.

By Gothberg, Helen M..
Hamden, Conn. Library Professional Publications 1983 .
246 p. , Includes index. 020801859X | 0208018603 (pbk.)