Laura Lee Hope Books

The Flying Clown Bobbsey Twins

By Laura Lee Hope

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The Bobbsey twins on the Sun-Moon cruise

By Laura Lee Hope

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When the Bobbsey twins take an ocean voyage to view a solar eclipse, they become involved in a mystery concerning damaged equipment and missing papers.

The freedom bell mystery

By Laura Lee Hope

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The Bobbsey Twins hope to expose some rather suspicious activities at the Silver Town Mint Center.

Bobbsey Twins

By Laura Lee Hope

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The four twin detectives investigate the mysterious thefts and vandalism that threaten to close a Smoky Mountain crafts market.

The Bobbsey twins in a TV mystery show

By Laura Lee Hope

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While in California appearing in a television show, the Bobbsey twins stumble upon a mystery involving a key, a missing dog, and some photographs.

The Bobbsey twins

By Laura Lee Hope

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While staying with their cousins on Grand Cayman Island, the Bobbsey twins and their friends search for an exquisite art object and the thief who stole it.

Bobbsey Twins 01: The Bobbsey Twins Of Lakeport

By Laura Lee Hope

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Mystery at school

By Laura Lee Hope

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Secret Shore (Bobbsey Twins)

By Laura Lee Hope

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Mystery School Bobbsey Twins

By Laura Lee Hope

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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.