Peter A. Campbell Books

Alien encounters

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A scrapbook of eight well-known alien encounters, using first-hand descriptions to provide illustrations of what the aliens and their spacecraft might have looked like.

Old Time Baseball The First Single Titles

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BioSpirituality

By Peter A. Campbell, Edwin M. McMahon

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Bio-spirituality

By Peter A. Campbell

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Focusing and Prayer

By Peter A. Campbell

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Launch day

By Campbell Peter A.

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Describes preparation, launch, and return of the Atlantis space shuttle at Cape Kennedy Space Center in Florida.

Launch day

By Campbell Peter A.

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Describes preparation, launch, and return of the Atlantis space shuttle at Cape Kennedy Space Center in Florida.

Boston Pilgrims Vs Pittsburgh Pirates

By Peter A Campbell

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How Adults Can Listen to Children in a Focusing Way

By Edwin M. McMahon

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Fruit from the Trees

By Campbell Peter A.

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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.