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Pennsylvania ILL References:
Federal Definition for Annual Reporting Purposes: The total annual circulation of all library materials of all types, including renewals. Note: Count all materials in all formats that are charged out for use outside the library. Interlibrary loan transactions included are only items borrowed for users. Do not include items checked out to another library. *Citation: https://www.imls.gov/sites/default/files/pls_defs_fy2016.pdf
Other States:
Out of State Loans:
https://www.oclc.org/en/worldshare-ill.html
Evergreen:
Fulfillment: http://fulfillment-ill.org/ This is an Evergreen extension for ILL.