Philip Geer Books

Simon s Saga for the SAT I Verbal

By Philip Geer

Average: 0.00, 0 Ratings

Picture These SAT Words

By Philip Geer, Susan Geer

Average: 0.00, 0 Ratings

"Carefully focused reviews explain and demonstrate the GRE's three new question types and help you achieve a high score -- More than 380 example questions with answers provide intensive practice an...

Barron s 6 Practice Tests for the NEW SAT 2nd Edition

By Philip Geer, Stephen Reiss

Average: 0.00, 0 Ratings

Barron s GRE verbal workbook

By Philip Geer

Average: 0.00, 0 Ratings

"Carefully focused reviews explain and demonstrate the GRE's verbal question types and help you achieve a high score. More than 380 example questions with answers provide intensive practice and rev...

Essential words for the GRE

By Philip Geer

Average: 0.00, 0 Ratings

Presents lists of advanced vocabulary words to be studied for the Graduate Record Examination, with definitions, examples of how the words are used, a pretest and posttest, and a special section on...

Picture these SAT words

By Philip Geer

Average: 0.00, 0 Ratings

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.