As far back as the mid-1960s.
Description: "Indexes more than 560 core journals, nearly 50 priority journals, and nearly 125 selective journals; plus books, research reports and proceedings. Subject coverage includes librarianship, classification, cataloging, bibliometrics, online information retrieval, information management and more. Coverage in the database extends back as far as the mid-1960s."--Ebsco Publishing website.
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