Jeanne B. Hardendorff Books

Sing song scuppernong,

By Jeanne B. Hardendorff

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Clever - clever - clever

By Jeanne B. Hardendorff

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Witches Wit and a Werewolf

By Jeanne B. Hardendorff

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Libraries and how to use them

By Jeanne B. Hardendorff

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An introduction to libraries and the use of their resources, including reference books, catalogs, and the Dewey Decimal and the Library of Congress classification systems.

The bed just so

By Jeanne B. Hardendorff

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A tailor gets no sleep until he finds a comfortable bed for a hudgin that has come to live with him.

Witches Wit and a Werewolf

By Laszlo Kubinyi, Jeanne B. Hardendorff

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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.