William Gruber Books

Letting Go

By William A. M.D. Gruber

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On All Sides Nowhere

By William Gruber

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"When Bill Gruber left Philadelphia for graduate school in Idaho, he and his wife decided to experience true rural living. His longing for the solitude and natural beauty that Thoreau found on Wald...

On All Sides Nowhere

By William Gruber

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Offstage Space Narrative and the Theatre of the Imagination

By William Gruber

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On All Sides Nowhere

By William Gruber

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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.