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Roloff, H.: ¬Die Auskunftstätigkeit der wissenschaftlichen Bibliotheken (1954)
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- Source
- Zentralblatt für Bibliothekswesen. 68(1954) H.3/4, S.85-96
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Mummendey, R.: Auskunft und Benutzung in amerikanischen Bibliotheken (1956)
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Shaw, R.R.: Mechanical storage, handling, retrieval and supply of information (1958)
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- Source
- Libri. 8(1958) no.1, S.1-48