Bob Mayer Books

Eternity Base
Eternity Base

By Bob Mayer

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Z
Z

By Bob Mayer

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Atlantis Bermuda Triangle
Atlantis Bermuda Triangle

By Bob Mayer

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Atlantis Devil s sea
Atlantis Devil s sea

By Robert Doherty

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"They have invaded then thousand years ago when they destroyed Atlantis. Now mankind's ancient enemy has returned. In Cambodia, the Shadow tried to break through and overthrow our world. Then they...

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Atlantis Gate
Atlantis Gate

By Robert Doherty Bob Mayer

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Assault on Atlantis
Assault on Atlantis

By Bob Mayer

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Who dares wins
Who dares wins

By Bob Mayer

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Agnes and the Hitman
Agnes and the Hitman
Agnes and the Hitman

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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.

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