Eric Holzenberg Books

The Middle Hill Press

By Eric Holzenberg

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Three gold bezants three silver stars

By Eric Holzenberg

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Printed Catalogues Of French Book Auctions And Sales By Private Treaty 1643 1830 In The Library Of The Grolier Club

By Eric Holzenberg, Michael J. North

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Lasting Impressions

By Eric Holzenberg

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"Soon after the founding of the Grolier Club in 1884, a Library Committee was established "to gather together for the use of the members all the standard bibliographical works, as well as books rel...

For Jean Grolier and His Friends

By Eric Holzenberg, George Ong

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Grolier Club Collects II

By Eric Holzenberg, George Ong, Arthur L. Schwarz

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For Art s Sake

By Eric Holzenberg

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The Grolier Club Iter Britannicum

By Eric Holzenberg, Carol Z. Rothkopf, Carolyn Smith

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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.