Roger Crowley Books

City of Fortune

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“The rise and fall of Venice’s empire is an irresistible story and [Roger] Crowley, with his rousing descriptive gifts and scholarly attention to detail, is its perfect chronicler.&r...

City of Fortune

By Roger Crowley

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“The rise and fall of Venice’s empire is an irresistible story and [Roger] Crowley, with his rousing descriptive gifts and scholarly attention to detail, is its perfect chronicler.&rdqu...

Empires of the Sea

By Roger Crowley

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City of Fortune

By Roger Crowley

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Venedig Erobert Die Welt

By Roger Crowley

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1453

By Roger Crowley

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City of Fortune

By Roger Crowley

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Accursed Tower

By Roger Crowley

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Empires of the Sea

By Roger Crowley

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In 1521, Suleiman the Magnificent, Muslim ruler of the Ottoman Empire at the height of its power, dispatched an invasion fleet to the Christian island of Rhodes. This would prove to be the opening...

Venedig Erobert Die Welt

By Roger Crowley

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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.