Maurice De Wulf Books

Philosophy and Civilization in the Middle Ages

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The material of these lectures, which I had the honor of delivering at Princeton University, on the Vanuxem Foundation, was prepared, during the War, at the Universities of Harvard, Poitiers, and T...

Philosophy and civilization in the Middle Ages

By M. De Wulf, Maurice Marie Charles Joseph De Wulf

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An Introduction to Scholastic Philosophy Medieval and Modern

By Maurice DeWulf

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Philosophy and civilization in the Middle Ages

By M. De Wulf

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Introduction to Scholastic Philosophy

By P. P. Coffey, Maurice Wulf

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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.