Terry Marks Books

Color Harmony Compendium: A Complete Color Reference For Designers Of All Types, 25th Anniversary Edition

By Mîne, Tina Sutton, Origin., Terry Marks

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1000 More Graphic Elements Vol. 3

By Grant Design Collaborative

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Color Harmony Compendium

By Terry Marks, Terry Marks; MINE

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A selection of content from the entire Color Harmony library offers readers the most comprehensive reference book on the usage of color available today. Included are swatches and material for desig...

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.