Louis H. Janda Books

Psychology

By Louis H. Janda

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Psychological Testing: Theory and Applications

By Louis H. Janda

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The Psychologist's Book of Self-Tests

By Louis H. Janda

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How comfortable are you with success?Do you possess above-average intelligence?Who do you believe controls your fate?How well do you really know yourself?Psychologists have spent years trying to he...

Are You Happy

By Louis H. Janda

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Are You Happy 6 copy counter

By Louis H. Janda

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Human sexuality

By Louis H. Janda

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How to live with an imperfect person

By Louis H. Janda

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How to Live Imperfectly

By Louis H. Janda

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Personal adjustment

By Louis H. Janda, Valerian Derlega

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Personal Adjustment

By Louis H. Janda, Valerian J. Derlega

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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.