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  1. Epperson, T.W.; Zemel, A.: Reports, requests, and recipient design : the management of patron queries in online reference chats (2008) 10.60 
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    Zemel, A.
  2. Zemel, A.: Texts as actions : requests in online chats between reference librarians and library patrons (2017) 10.60 
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    Zemel, A.

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