John Collado Books

Debt free in six months
Debt free in six months

By John Collado

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The complete manual on credit card debt negotiation, debt collection, lawsuit defense, judgment reversal, and credit repair guide.

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Geese on the Streets
4 Activity Books for Kids
4 Sports Books for Kids
Capa de Colores
Capa de Colores

By John Collado, Karl Beckstrand

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Great Cape o Colors
Great Cape o' Colors

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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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