Humanities Indicators
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IV-11b: Median Materials Costs, Purchases, and Expenditures for Member Institutions of the Association of Research Libraries, Academic Years 1986–2011 (Adjusted for Inflation)*

* Includes electronic resources from 1999 onward. Serials purchased and their unit cost are not presented due to a change in the way the Association of Research Libraries records serials. Adjustment for inflation made using the Consumer Price Index for All Urban Consumers (CPI-U) produced by the U.S. Department of Labor’s Bureau of Labor Statistics.

Source: Association of Research Libraries, “Expenditure Trends in ARL Libraries 1986–2012,”

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