Martha Demas Books

Lessons Learned Reflecting on the Theory and Practice of Mosaic Conservation

By Aicha Ben Abed, International Committee For The Conservation Of Mosaics. Conference

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Strategies for Sustainable Tourism at the Mogao Grottoes of Dunhuang China

By Neville Agnew, Jinshi Fan, Martha Demas

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At the Mogao Grottoes, a World Heritage site near Dunhuang city in Gansu Province, visitor numbers have increased inexorably since 1979 when the site opened. A national policy that identifies touri...

Strategies for Sustainable Tourism at the Mogao Grottoes of Dunhuang China

By Neville Agnew, Jinshi Fan, Martha Demas

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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.