Jacobs Daniel Books

Compares the appearance and use of common machines such as camera, clock, telephone, bicycle, auto, train, and plane with that of the models used long ago.

Who works at the zoo

By Jacobs Daniel

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Lots of animals live in the zoo. There are tigers and turtles, monkeys and manatees. Who feeds all the animals? Who takes care of them when they are sick? Who makes comfortable homes for them? Find...

A dictionary of snake facts

By Jacobs Daniel

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Grillos increibles

By Jacobs Daniel

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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.