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Doek, A.: Antwoord op elke vraag : Bilbiofoon aan een vergelijkend 'warenonderzoek' onderworpen (1994)
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Hofstede, M.: Literatuur over onderwerpen zoeken in de OPC (1994)
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Riesthuis, G.J.A.: Vrije tekst en gecontroleerd vocabulaires (1999)
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Frowein, C.: Benchmarking voor informatiedienstverleners : een zinvolle stap op weg naar kwaliteit (1998)
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