Zachary Hayes Books

Saint Bonaventures Disputed Questions on the Mystery of the Trinity

By Zachary Hayes

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Visions of a Future

By Zachary Hayes

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Gift of being

By Zachary Hayes

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Bonaventure

By Zachary Hayes

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"St. Bonaventure (1221-1274) is known as the Seraphic Doctor in honor of one of the basic qualities of his teaching-the purest love. Described by Etienne Gilson as "a St. Francis of Assisi gone phi...

Visions of a future

By Zachary Hayes

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The hidden center

By Zachary Hayes

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That Others May Know and Love

By Michael Cusato

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Franciscan Intellecutual Tradition

By Washington Theological Union. Symposium, Elise Saggau

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Itinerarium mentis in Deum

By Saint Bonaventure Cardinal

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Franciscans and Creation

By Washington Theological Union. Symposium

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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.