Michael Dregni Books

Everything Harley Davidson

By Michael Dregni

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The Harley Davidson reader

By Jean Davidson

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Greetings from Route 66

By Michael Dregni

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John Steinbeck famously christened Route 66 as our "Mother Road." Others have called it the Main Street of the United States, the road that links the East to the West, a symbol of America. Now, her...

This Old Tractor A Treasury of Vintage Tractors and Family Farm Memories

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This Old John Deere A Treasury of Vintage Tractors and Family Farm Memories

By Michael Dregni

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This Old Harley

By Michael Dregni

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Illustrated motorscooter buyer's guide

By Michael Dregni

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Harley Davidson

By Voyageur Press

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This Old Farm

By Roger Welsch

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100 Years of Vintage Farm Tractors

By Michael Dregni

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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.