Video games rated E at Waupun, Wisconsin, to borrow free
E
E
E
E
E
E
E
E
E
E
E
E
E
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E
E
E
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E
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E
E
Copies per library (table)
Each change is stamped with the snapshot that saw it; it happened since the snapshot before (hourly for copies already moving, every 4 hours for everything else).