Lewis Jerry M. Books

This book - so rich in theoretical and clinical revelation - provides deep insight into the author's approach to couples therapy. Readers at any level of practice will come away with a much expande...

The monkey-rope

By Lewis Jerry M.

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The Monkey-Rope is Melville's symbol in his novel Moby Dick for the relationships that bind each of us to every other individual who shares our human condition - family, friends, lovers, colleagues...

Disarming the past

By Lewis Jerry M.

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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.