Fran Orenstein Books

The Wizard of Balalac

By Fran Orenstein

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Mystery of the Green Goblin

By Fran Orenstein

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Huby, the strange boy who sees the future, mysteriously materializes out of nowhere to return in this exciting sequel to The Mystery Under Third Base. It's Halloween and Alex Cooper, age 11, is wea...

Fat Girls From Outer Space

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Goblin Murder Mystery

By Fran Orenstein

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Spice Merchant s Daughter

By Fran Orenstein

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Death in d Minor

By Fran Orenstein

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Death in D Minor

By Fran Orenstein

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Fat Girls from Outer Space

By Fran Orenstein

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Mystery of the Green Goblin

By Fran Orenstein

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Spice Trader s Daughter

By Fran Orenstein

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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.