Patrick Ryan Books

Indonesia Countries

By Ryan Patrick, Patrick Ryan

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Provides basic information about the land, climate, history, and culture of Indonesia, the world's largest archipelago.

China

By Ryan Patrick

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Describes the five major regions of China and briefly tells how people live there.

Egypt

By Ryan Patrick

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An introduction to the geography, history, culture, and people of Egypt.

New Zealand

By Ryan Patrick

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Describes the geography, history, people, and culture of the mountainous island country of New Zealand.

India

By Ryan Patrick

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Introduces the history, geography, people, and customs of the Asian nation of India.

Ireland

By Ryan Patrick

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An introduction to the geography, history, people, and customs of Ireland.

Poland

By Ryan Patrick

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Describes the history, geography, plants and animals, language, people, and customs of Poland.

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.