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2. The Vertical File Index. A Role To Play, A Contribution To Make
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4. Dunn, J.A. and Martin, M.S. (1994), “The whole cost of libraries”, Library Trends, Vol. 42 No. 3, pp. 564‐78.
5. Fox, B.L. and Kremen, M.L. (1997), “The renovation model”, Library Journal, Vol. 122 No. 20, pp. 49‐52.