Walker A. Tompkins Books

The golden spur
The golden spur

By Walker A. Tompkins

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Rimrock rider
Rimrock rider

By Walker A. Tompkins

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West of Texas Law.
West of Texas Law.

By Walter A. Tompkins

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Texas Renegade
Texas Renegade

By Walker A. Tompkings

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Santa Barbara s Royal Rancho
SOS at midnight
SOS at midnight

By Walker A. Tompkins

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A high school senior uses his knowledge of ham radio to save his life and that of a friend and to break up a ring of gangsters.

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DX brings danger
DX brings danger

By Walker A. Tompkins

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Treasure hunting off the coast of California provides a dangerous adventure for Tommy Rockford, teen-age ham radio operator.

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Cottage Hospital
Cottage Hospital

By Walker Allison Tompkins

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Santa Barbara Neighborhoods
Santa Barbara Neighborhoods

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Bushwack Bullets
Bushwack Bullets

By Walker A. Tompkins

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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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