James Tertius De Kay Books

Chronicles of the Frigate Macedonian 1809 1922

By James Tertius De Kay, James T. De Kay

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A Rage for Glory

By James T. De Kay, James Tertius De Kay

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"Stephen Decatur was one of the most awe-inspiring officers of the entire Age of Fighting Sail. A real-life American naval hero in the early nineteenth century, he led an astonishing life, and his...

Monitor

By James Tertius De Kay, James Tertius Dekay, James T. De Kay

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Monitor is the fascinating saga of arguably the most famous ship in American history, of the events leading up to and following the battle, and of the people who made them happen. John Ericsson ha...

Monitor

By James Tertius Dekay

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The natural superiority of the left-hander

By James T. De Kay

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The World s Greatest Left Handers

By Sandy Huffaker, James T. De Kay

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A Rage for Glory

By James Tertius De Kay

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Roosevelt s navy

By James T. De Kay

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De Kay explores Roosevelt's formative years as Woodrow Wilson's Assistant Secretary of the Navy. From his arrival in Washington as a somewhat shallow, inexperienced political neophyte, we watch him...

Monitor

By James T. Dekay

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Meet Christopher Columbus Step Up Books

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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.