Jerry Bobrow Books

Cliffs scholastic aptitude test

By Jerry Bobrow

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Cliffs PSAT preparation guide

By Jerry Bobrow

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A guide for preparing for the PSAT/NMSQT. Includes test-taking strategies and techniques, mathematical terminology and formulas, a list of prefixes, suffixes, and roots, and a practice exam.

Cliffs American college testing preparation guide

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Bluff Your Way in Football

By Jerry Bobrow, Alan Gilreath

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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.