Charles David Clasman Books

In this adventure, the heroes discover more than candy in their Easter baskets: ghosts haunt the library's egg hunt; chocolate bunnies bare their teeth and bite back. Saving Easter has never been s...

Heroes A2Z 6

By Charles David Clasman

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Guitar rocket star

By David Anthony

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"In this adventure, a battle of the bands turns into a real war. It's rock versus roll as mullets try to steal the show. One wrong note, and everything could be out of tune"--Page 4 of cover.

Holiday holdup

By David Anthony

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"In this adventure, Christmas is in danger. Candy bandits cheat down chimneys looking to poach the present placed under the tree. If the heroes don't wrap up the bandits tight, there won't even be...

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.