Mary Willis Walker Books

In her latest, hard-hitting novel of suspense, award-winning writer Mary Willis Walker introduces a gutsy new heroine - Texas-based crime reporter Molly Cates - and a chilling tale of violence and...

Under the beetle's cellar

By Mary Willis Walker

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Kidnapped by a cult of religious fanatics, an Austin school bus driver and eleven of his young charges have been held beneath the ground of the group's highly fortified compound for forty-six days....

All the dead lie down

By Mary Willis Walker

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Under the Bettle s Clear

By Mary Willis Walker

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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.