Gerald Bowler Books

The World Encyclopedia of Christmas

By Gerald Bowler, Gerry Bowler

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Santa Claus

By Gerald Bowler, Gerry Bowler

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The World Encyclopedia of Christmas

By Gerry Bowler

Average: 0.00, 0 Ratings

Santa Claus

By Gerry Bowler

Average: 0.00, 0 Ratings

An entertaining, often surprising look at the life of the world’s most influential fictional character.He is the embodiment of charity and generosity, a creation of mythology, a tool of cleve...

Music from Within

By Gerald Bowler, Ferdinand Eckhardt

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Music from Within

By Gerald Bowler, Ferdinand Eckhardt

Average: 0.00, 0 Ratings

Santa Claus

By Gerry Bowler

Average: 0.00, 0 Ratings

An entertaining, often surprising look at the life of the world’s most influential fictional character.He is the embodiment of charity and generosity, a creation of mythology, a tool of cleve...

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.