Roger Simó Books

The Salem Witch Trials

By Nancy Ohlin, Roger Simo

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The Civil Rights Movement

By Nancy Ohlin, Roger Simo

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When people think about the Civil Rights Movement, things like segregation and Dr. Martin Luther King Jr.'s "I Have a Dream" speech may come to mind. But what was the movement all about, and what s...

The Statue of Liberty

By Nancy Ohlin, Roger Simo

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The Statue of Liberty

By Nancy Ohlin

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Get ready to blast back to the past and learn all about the Statue of Liberty!

Women s Suffrage

By Nancy Ohlin

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Women s suffrage

By Nancy Ohlin

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When people think about the women's suffrage movement, things like voting rights and protests may come to mind. But what was the movement all about, and what social change did it bring? This engagi...

Pearl Harbor

By Nancy Ohlin

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When people think about Pearl Harbor, things like WWII and Japan may come to mind. But why did the attack occur, and what happened as a result? This engaging nonfiction book, complete with black-an...

Pearl Harbor

By Nancy Ohlin

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Pearl Harbor

By Nancy Ohlin

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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.