David Haynes Books

Business as usual

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The Wildcats face hard work and many challenges when their sixth grade spring economics unit focuses on how to run a business.

The Gumma wars

By David Haynes

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Eleven-year-old Lu and his two grandmothers, who fight for his attention, spend a Saturday visiting stores and museums in Minneapolis and St. Paul, Minnesota.

Business as usual

By David Haynes

Average: 0.00, 0 Ratings

The Wildcats face hard work and many challenges when their sixth grade spring economics unit focuses on how to run a business.

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.