Robert Heck Books

Religious Architecture In Louisiana

By Otis B. Wheeler, Robert W. Heck, Robert Heck

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An enormous number of places of worship have been built in Louisiana during the past 250 years, many of which still stand. Today in New Orleans alone there are more than 850 churches representing o...

The Cross In The Road: Life'S Journey

By Robert Heck

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The Cross In The Road: Life'S Journey

By Robert Heck

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Eva Schlegel: L.A. Women

By Eva Schlegel, Marie Therese Harnoncourt, Robert Heck

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A Collection Of Brief Biographical Information About The Following Artists: Cindy Bernard ; Kaucyila Brooke ; Julie Burleigh ; Meg Cranston ; Amy Gerstler ; April Greiman ; Amy Halpern ; Mary Kelly...

Notes on the Graphics of Machine Forces

By Robert Heck

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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.