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"Question types in public libraries' digital reference service in Finland: ..."
Piritta Numminen, Pertti Vakkari (2009)
- Piritta Numminen, Pertti Vakkari:
Question types in public libraries' digital reference service in Finland: Comparing 1999 and 2006. J. Assoc. Inf. Sci. Technol. 60(6): 1249-1257 (2009)
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