Achim K. Krull Books

CliffsNotes GED test cram plan

By Murray Shukyn

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GED science test for dummies

By Murray Shukyn

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Does the thought of taking the GED Science Test make you sweat? Fear not! With the help of GED Science Test For Dummies, you'll get up to speed on the new structure and computer-based format of the...

GED RLA test for dummies

By Murray Shukyn

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GED Mathematical Reasoning test for dummies

By Murray Shukyn

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Overview and guide to the GED Mathematical Reasoning test, including overview, question structure, review of basic math skills, a diagnostic test, how to register, and more.

CliffsNotes GED Test Cram Plan Second Edition

By Murray Shukyn, Dale E. Shuttleworth, Achim K. Krull

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Romanticism

By Frederick Burwick

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GED Test for Dummies Quick Prep

By Murray Shukyn, Dale E. Shuttleworth, Achim K. Krull

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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.