David F. Walker Books

The Life of Frederick Douglass

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A graphic novel biography of the escaped slave, abolitionist, public speaker, and most photographed man of the nineteenth century, based on his autobiographical writings and speeches, spotlighting...

Planning industrial development

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Walker

By David F. Walker

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Canada's industrial space-economy

By David F. Walker

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Manufacturing in Kitchener-Waterloo

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Cyborg

By David F. Walker

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"The long-awaited solo series of one of the DCU's most legendary characters continues here in CYBORG VOL. 2! Following the attack of the Techno-sapiens, the government implements greater regulation...

Super Justice Force

By David F. Walker

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"Darius Logan is an orphaned teenager in serious trouble. Facing time in prison, he instead enters Second Chance, a rehabilitation program for ex-criminals operated by Super Justice Force, the worl...

Becoming Black

By David F. Walker

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Power Man Iron Fist

By David F. Walker

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"The best buddy team in comics, reunited at last! Luke Cage and Danny Rand, the Heroes For Hire turned Avengers, are going back to street level basics - and there's a mystery to solve that will dra...

Power Man and Iron Fist

By David F. Walker

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Power Man must free the imprisoned Iron Fist, despite his team of former criminals possibly being more of a hindrance than a help.

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.