Downs, Sandra Books

Earth'S Hidden Treasures, The

By Sandra Downs, Sandra Friend, Downs, Sandra

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64 pages : 27 cm Explains what rocks, minerals, and gemstones are found on the earth and how they are used by people Includes bibliographical references (pages 57-61) and index Preface: Treasures W...

Readings In Research Methodology

By Sandra., Florence S. Downs, Downs, Downs, Sandra, Downs, Florence S.

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This handbook presents a collection of seminal articles on research procedures. Various aspects of research methodologies are covered in detail, and editorial comment by the text editor offers insi...

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.