Geoff Martz Books

Cracking the GMAT with Sample Tests on Computer Disk 96 ed Mac Princeton Review
Cracking the GED
Cracking the GED

By Geoff Martz, John Katzman

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Princeton Review How to Survive Without Your Parents Money
Cracking the GMAT with Sample Tests on Computer Disks 1997 ed Annual
Cracking the GMAT with Sample Tests on CD ROM 1997 ed Annual
Cracking the GMAT CAT w Sample Tests on CD ROM
Cracking the GED 1998 edition Serial
Cracking the GMAT
Cracking the GMAT

By Geoff Martz

Average: 0.00, 0 Ratings

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Cracking the GMAT
Cracking the GMAT

By Geoff Martz

Average: 0.00, 0 Ratings

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Cracking the ACT
Cracking the ACT

By Geoff Martz

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A guide to preparing for the ACT, including 6 full-length practice tests, a review of all ACT subjects, and practice questions with explanations.

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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.

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