Catherine Clark Books

Wishes and Dreams

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As the twins celebrate their 16th birthday, Mary-Kate has just one birthday wish: to patch things up with her sister, but Ashley is still angry about their messed up sweet sixteen party plans. Can...

Gilmore Girls: I Do, Don't I?

By Catherine Clark

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Like Mother, Like Daughter

By Catherine Clark

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The Alison Rules

By Catherine Clark

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Alison tries to deal with the pain of her mother's death by sticking to rules until charming Patrick moves to town, and then she learns that no matter what, life still happens to you.

The Alison Rules

By Catherine Clark

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Alison tries to deal with the pain of her mother's death by sticking to rules until charming Patrick moves to town, and then she learns that no matter what, life still happens to you.

Wish you were here

By Catherine Clark

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On a free-wheeling bus tour of the West with assorted family members, senior citizens galore, and one boy her age, sixteen-year-old Ariel writes postcards to her maybe-boyfriend and others while tr...

Wish You Were Here

By Catherine Clark

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Wish You Were Here

By Catherine Clark

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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.