John Cassian Books

The Conferences of John Cassian

By John Cassian

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57. John Cassian

By John Cassian, Boniface Ramsey

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"The Institutes is the first written work of John Cassian, a man who had an immense influence on Western monasticism and, by extension, on Western civilization. A native of Dacia, Cassian (c. 360-4...

Making life a prayer

By John Cassian

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The Conferences of John Cassian I

By John Cassian, Iosif Volotskii Saint

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The Conferences of John Cassian III

By John Cassian

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The conferences of John Cassian

By John Cassian

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Teachings on the Spiritual Life

By John Cassian

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The Monastic Institutes Consisting of on the Training of a Monk and the Eight Deadly Sins

By John Cassian

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Repondre a l'appel du Christ

By John Cassian

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

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.