Robert Simmons Books

Stones of the new consciousness
Cancer Companion
Cancer Companion

By Robert Simmons

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Hardcore Java
Hardcore Java

By Robert Simmons

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Hardcore Java
Hardcore Java

By Robert Simmons

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Sea Gunner s Vade mecum
Sea Gunner s Vade mecum

By Robert Simmons

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Sea Gunner s Vade mecum
Sea Gunner s Vade mecum

By Robert Simmons

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Hardcore Java
Hardcore Java

By Robert Jr Simmons

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Sea Gunner s Vade mecum
Sea Gunner s Vade mecum

By Robert Simmons

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The pocket book of stones
The pocket book of stones

By Simmons Robert

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"A pocket-size reference guide to the spiritual and healing qualities of over 350 minerals, crystals, and gemstones"--Provided by publisher.

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Book of Stones

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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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