Roberts David Books

An Indian boy and girl journey to make peace with the Thunderbird so that their tribe can cease its nomadic life. The back of the book contains decorated Origami sheets to be cut out and folded for...

The spear thrower

By Roberts David

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Banished to the Island of the Gods as a sacrifice, a prehistoric boy returns to become leader of his people. The back of the book contains decorated Origami sheets to be cut out and folded for use...

A quick guide to Christianity

By Roberts David

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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.