Krista Dornbush Books

Kaplan's AP U.S. History Prep Plus 2018-2019 gives you concise review of the most-tested content to quickly build your skills and confidence. With bite-sized, test-like practice sets and customizab...

AP U.S. history 2017 2018

By Krista Dornbush

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Provides a comprehensive review of the exam topics, covering from the New World to the twenty-first century, and includes test-taking tips, sample questions and answers, and full-length practice te...

Kaplan AP U.S. History 2011

By Krista Dornbush

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AP U.S. history 2014

By Krista Dornbush

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Features a review of U.S. history, test-taking tips, sample questions and answers, and two full-length practice exams.

AP U.S. history 2015

By Krista Dornbush

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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.