Paul Marcus Books

Scary Night Visitors

By Paul Marcus, Irene Wineman Marcus

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Scary Night Visitors

By Paul Marcus, Irene Wineman Marcus

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When Davey realizes that his scary nighttime visitors are really his unacceptable angry feelings about his little sister, projected into the outside world, he feels free to express his anger in a h...

Into the Great Forest

By Paul Marcus, Irene Wineman Marcus

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Reluctant to leave home for his first day of school, a young boy has a reassuring dream in which he leaves his royal parents for an adventure in the forest and returns safely to the castle.

The Psychoanalysis of Overcoming Suffering

By Paul Marcus

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The Entrapment Defense

By Paul Marcus

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Entrapment Defense With Supplement

By Paul Marcus

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The Entrapment Defense

By Paul Marcus

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They Shall Beat Their Swords Into Plowshares. Military Strategy Psychoanalysis and the Art of Living

By Paul Marcus

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In Search of the Good Life

By Paul Marcus

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Jaures l humaniste

By Paul Marcus

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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.