Catherine Nichols Books

Treasure Island

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A brief, simplified retelling of the episode in "Treasure Island" during which Jim Hawkins spies on Long John Silver and his pirate band as they search for buried treasure, and meets a new friend w...

Treasure Island.

By Catherine Nichols

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A brief, simplified retelling of the episode in "Treasure Island" during which Jim Hawkins tries to keep a treasure map safe from Long John Silver and his pirate band.

The adventures of Tom Sawyer.

By Catherine Nichols, Mark Twain

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A brief, simplified retelling of the episode in "Tom Sawyer" in which Tom learns a lesson about honesty on his brother's birthday.

The adventures of Tom Sawyer.

By Catherine Nichols, Mark Twain

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A brief, simplified retelling of the episode in "Tom Sawyer" in which Tom cheats during the spelling bee, but later realizes he must make things right.

Pablo Picasso The Primary Source Library of Famous Artists

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Pierre Auguste Renoir The Primary Source Library of Famous Artists

By Auguste Renoir, Catherine Nichols

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Polar Adventures

By Catherine Nichols

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Animal Masterminds

By Catherine Nichols

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Claude Monet The Primary Source Library of Famous Artists

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Leonardo Da Vinci The Primary Source Library of Famous Artists

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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.