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3. et al. “Costs of owning, borrowing and disposing of periodical publications.” Public Research Institute, a division of the Center for Naval Analyses, October 1977.
4. “Interlibrary loan activity at M. I. T.: Characteristics and costs.” A report submitted to Simmons College, School of Library Science, May 3, 1976.
5. “Interlibrary borrowing for the M. I. T. libraries.” Internal memorandum, December 1978.