CONTENTS
Research Library Trends ...........................................................................................................................5
Research Library Trends Tables
1. Service Trends in ARL Libraries, 1991–2007 ........................................................................................8
2. Median Monograph and Serial Expenditures in ARL Libraries, 1986–2007 ................................10
3. Supply and Demand in ARL Libraries, 1986–2007 ...........................................................................12
4. Expenditure Trends in ARL Libraries, 1986–2007 .............................................................................14
5. Resources per Student in ARL University Libraries, 1986–2007 ....................................................16
6. Electronic Resources Expenditures in ARL University Libraries, 2006–2007 ...............................18
7a. Electronic Resources and Materials Expenditures in ARL University Libraries, 1992–2002 ...20
7b. Electronic Resources and Materials Expenditures in ARL University Libraries, 2002–2006 ...21
Research Library Trends Graphs
1. Service Trends in ARL Libraries, 1991–2007 ........................................................................................9
2. Median Monograph and Serial Expenditures in ARL Libraries, 1986–2007.................................11
3. Supply and Demand in ARL Libraries, 1986–2007 ...........................................................................13
4. Expenditure Trends in ARL Libraries, 1986–2007 ............................................................................15
5. Resources per Student in ARL University Libraries, 1986–2007 ....................................................17
6. Electronic Resources vs. Total Materials Expenditures, 1993–2007 ...............................................19
ARL Statistics Interactive Edition .........................................................................................................22
ARL Library Data Tables, 2006–2007
Collections Part 1 ................................................................................................................................24
Summary Data ..............................................................................................................................30
Collections Part 2 ................................................................................................................................32
Summary Data ..............................................................................................................................35
Expenditures .......................................................................................................................................36
Summary Data ..............................................................................................................................42
Electronic Resources Expenditures ..................................................................................................44
Summary Data ..............................................................................................................................50
Personnel and Public Services ..........................................................................................................52
Summary Data ..............................................................................................................................58
Analysis of Selected Variables of University Libraries, 2006–2007 ................................................60
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