Clyde Robert Bulla Books

Pocahontas and the Strangers

By Clyde Robert Bulla

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Squanto Friend Of The Pilgrims

By Clyde Robert Bulla

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A biography of the Indian who went to London with some of the first English explorers, was sold into slavery in Spain, and finally returned to America where he befriended the Pilgrims when they lan...

The Chalk Box Kid

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Things are not looking great for Gregory. He is not happy about moving to a new neighborhood and going to a new school. Then Gregory discovers an abandoned chalk factory behind his house. Soon a b...

The Chalk Box Kid

By Clyde Robert Bulla

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Shoeshine Girl

By Clyde Robert Bulla

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A Lion to Guard Us

By Clyde Robert Bulla

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Eagle Feather

By Clyde Robert Bulla

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Sword in the Tree Trophy Chapter Books

By Clyde Robert Bulla

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Secret Valley

By Clyde Robert Bulla

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Sword in the Tree Trophy Chapter Books

By Clyde Robert Bulla

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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.