Dan Spencer Books

Teach Yourself Owl Programming in 21 Days

By Ian Spencer

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Listen To What Your Kids Aren'T Telling You

By Michael Pritchard, Dan Spencer, Michael Pritchard, Dan Spencer

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Listen up, parents! Your children may not be telling you all the amazing things going on in their lives. Or maybe you're just not listening! But Michael Pritchard has listened. And this PBS series...

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.