David S. Sobel Books

Examines the common traps by which individuals can be manipulated, such a peer pressure, groupthink, advertising, and media, and what can be done to avoid them.

Manual de La Salud del Cuerpo y La Mente

By David S. Sobel, Robert Ornstein

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People s Book of Medical Tests

By David S. Sobel, Tom Ferguson

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The people's book of medical tests

By David S. Sobel

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A guide to 200 diagnostic and home medical tests.

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.