John Reynolds Gardiner Books

Despite the disapproval of his parents and his formidable science teacher, nine-year-old Allen determines to do his science project on human photosynthesis.

Steinadler. SZ Junge Bibliothek Band 19

By John Reynolds Gardiner

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Stone Fox

By John Reynolds Gardiner

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General Butterfingers

By John Reynolds Gardiner

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When three aging war heroes are forced out of their home by the wicked nephew of the now-deceased owner and former occupant of the home, eleven-year-old Walter determines not to let it happen.

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.