William R. Trotter Books

Silk flags and cold steel

By William R. Trotter

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Bushwhackers the Civil War in North Carolina

By William R. Trotter

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Iron Clads and Columbiads the Coast the Civil War in North Carolina Iron Clads Columbiads The Coast

By William R. Trotter

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A frozen hell

By William R. Trotter

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Priest of Music

By William R. Trotter

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At the time of his death, Dimitri Mitropoulos (1896-1960) was considered one of the most brilliant conductors of the twentieth century. Yet within a decade, his achievements were largely forgotten....

A Frozen Hell

By William Trotter

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Close combat

By William R. Trotter

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Microsoft Close Combat A Bridge Too Far

By William R. Trotter

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The Winter War

By William R. Trotter

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Den finske Vinterkrig

By William R. Trotter

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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.