G. Geltner Books

The Making of Medieval Antifraternalism: Polemic, Violence, Deviance, and Remembrance
Medieval Prison
Medieval Prison

By G. Geltner

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Medieval Prison
Medieval Prison

By G. Geltner

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The medieval prison
The medieval prison

By Guy Geltner

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Roads to Health
Roads to Health

By G. Geltner

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Roads to Health
Roads to Health

By G. Geltner

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Making of Medieval Antifraternalism
Flogging Others
Flogging Others

By G. Geltner

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Center and Periphery
Center and Periphery
Center and Periphery

By G. Geltner, Katherine L. Jansen, Anne E. Lester

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"William Chester Jordan’s scholarship has demonstrated the complexity of negotiating power at both the center and margins of medieval society, taking us into the inner chambers of medieval power st...

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What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.

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