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Mowery, R.L.: ¬The "¬trend to LC" in college and university libraries (1975)
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Derr, R.L.: Questions: definitions, structure, and classification (1985)
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Derr, R.L.: Information seeking expressions of users (1984)
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Derr, R.L.: ¬A conceptual analysis of information need (1983)
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Hart, R.L.: Information gathering among the faculty of a comprehensive college : formality and globality (1997)
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