Howard John Books

Prehistoric life.
Prehistoric life.

By Howard John

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Mexico, the land and its people
Spain
Spain

By Howard John

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Spain
Spain

By Howard John

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Spain, the land and its people
Spain, the land and its people

By Howard John

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Text and pictures introduce the people of Spain, its culture, and its history.

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Spain, the land and its people
Spain, the land and its people

By Howard John

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Text and pictures introduce the people of Spain, its culture, and its history.

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Mexico
Mexico

By Howard John

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Discusses the geography, people, history, culture, and other aspects of Mexico.

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Conciliation, children, and divorce
Yo puedo leer sobre los dinosaurios
I can read about fossils
I can read about fossils

By Howard John

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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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