Erik Ehn Books

The saint plays

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"This collection of fifteen plays by Erik Ehn is part of an ongoing cycle of plays loosely based on the lives of saints and biblical characters ranging from John the Baptist to Joan of Arc. Placing...

Manifesto series

By Erik Ehn

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Manifesto series

By Erik Ehn

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Manifesto series

By Erik Ehn

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Manifesto series

By Erik Ehn

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Beginner American Theater in Literature Program

By Erik Ehn

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In this series of four short dialogues California playwright Erik Ehn explores religion and belief, how we learn to believe and what belief consists of. In Ehn's always magical and considerably cra...

Erotic Curtsies

By Erik Ehn

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Soulographie

By Erik Ehn

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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.

Erik Ehn Books

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

What is an EAN and How Does it Relate to an ISBN?