Jon L. Seydl Books

Rembrandt in America Collecting and Connoisseurship
Masterpieces of Painting in the J. Paul Getty Museum
Giambattista Tiepolo
Giambattista Tiepolo

By Jon L. Seydl, Jon Seydl

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Antiquity Recovered
Antiquity Recovered

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Gerhard Richter
The last days of Pompeii
The last days of Pompeii

By Jon L. Seydl, Kenneth D. S. Lapatin, Victoria C. Gardner Coates

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Destroyed yet paradoxically preserved by the eruption of Mount Vesuvius in A.D. 79, Pompeii and other nearby sites are usually considered places where we can most directly experience the daily live...

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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.

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