Gary Lewis Books

John Nosler Going Ballistic
Fishing Mount Hood Country
John Nosler
John Nosler

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EngineService Automotive Machining and Engine Repair
Complete Guide to Hunting
Complete Guide to Hunting

By Gary Lewis

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Trout fishing in the Pacific Northwest
Trout fishing in the Pacific Northwest

By Gary Lewis

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"Variety of techniques for catching trout in rivers and streams, including spinfishing, baitcasting, fly fishing. Detailed how-to photography accompanied by step-by-step instruction. Discussion of...

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Weakest Link Quiz Book
A collection of Australian bush verse
A collection of Australian bush verse

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Australia
Australia

By Gary Lewis

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Australia beyond the black stump

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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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