Charna Halpern Books

Truth in comedy

By Charna Halpern

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Group Improvisation: The Manual Of Ensemble Improv Games

By Charna Halpern, Peter Campbell Gwinn, Peter Gwinn, With Additional Material By Charna Halpern

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Who would have thought that participating in group improvisation could be so enlightening and rewarding! Peter Gwinn has developed The Group Mind at Improv Olympic in Chicago to create a new awaren...

Art by committee

By Charna Halpern

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Group Improvisation

By Peter Gwinn

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La Verdad En La Comedia The Truth In Comedy

By Charna Halpern, Kim Howard Johnson

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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.