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Brown, A.G.; Langridge, D.W.; Mills, J.: ¬An introduction to subject indexing (1982)
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Brown, A.G.; Langridge, D.W.; Mills, J.: Introduction to subject indexing : a programmed text (1976)
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Langridge, D.W.: Approach to classification for students of librarianship (1973)
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Langridge, D.W.: Classification: its kinds, systems, elements and application (1992)
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Langridge, D.W.: Inhaltsanalyse: Grundlagen und Methoden (1994)
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Langridge, D.W.: Subject analysis : principles and procedures (1989)
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