Mark Willner Books

Kaplan SAT Subject Test

By Joann Peters, Eugene Resnick, Jeff Schneider, Mark Willner

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Kaplan SAT Subject Test

By Kaplan Publishing

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Let s Review

By Jerry Weiner, David Moore, George Hero, Mary Martin, Mark Willner M.S.

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Updated to encompass significant world events and reflect the latest New York State Regents Exams, this book emphasizes the basics of world geography, the social sciences, and their relationship to...

SAT subject test

By Mark Willner

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SAT R Subject Test

By Joann Peters, Mark Willner, Schneider Jeff History Teacher, Eugene V. Resnick

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SAT subject test

By Kaplan Publishing

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A customized study program that includes full-length practice tests, detailed answer explanations, diagnostic test to guide your study schedule, score-raising strategies and tips, an in-depth revie...

Global History Volume I Teacher s Manual

By Jerry Weiner, George A Hero, Mark Willner

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Let s Review Regents

By Jerry Weiner, David Moore, George Hero, Mark Willner, Mary Martin

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Regents Global History and Geography Power Pack 2020

By Michael J. Romano, George Hero, Mark Willner, Mary Martin, William Streitwieser

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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.