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- author's%3a%22Ritchie%2c L.D.%22 2
- authors%3a%22Ritchie%2c L.D.%22 2
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Bell, H.K.: History of indexing societies : Pt.6: 1988-91 (2000)
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- Indexer. 22(2000) no.1, S.35-38
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Bell, H.K.: History of societies of indexing : part VII: 1992-95 (2000)
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- Indexer. 22(2000) no.2, S.81-83