Nat Gertler Books

Peanuts Be More Snoopy

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Keep the blues away with the power of positivity.Is the world getting you down? Struggling to find the silver lining to that cloud? Put your best paw forwards and ask yourself, "What would Snoopy d...

Peanuts Be More Charlie Brown

By Nat Gertler

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A humorous and thoughtful e-guide to living life your own way, inspired by Charlie Brown, the most philosophical member of the Peanuts gang.Learn how to soldier on through everything life throws at...

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.