Howard Chua Eoan Books

Corazon Aquino

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A biography of the woman who rose to political prominence after the death of her husband and was elected president of the Philippines in 1986.

Beneath the Surface

By Howard Chua Eoan, John Hargrove

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Beneath the Surface

By Howard Chua Eoan, John Hargrove

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Time Crimes of the Century

By Howard Chua Eoan

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TIME Pope for a New World

By Howard Chua Eoan, TIME Contributors

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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.