Mark A. Jacobson Books

AIDS Clinical Review 1995 1996 Aids Cinical Review

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Aids Clinical Review 1990

By Paul A. Volberding, Mark A. Jacobson, Paul Volberding

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Sensing Light

By Mark A. Jacobson

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A stunning story of three doctors' struggles in San Francisco during the first decade of the AIDS epidemic. March, 1979, a young street hustler in San Francisco stumbles into an emergency room with...

Learn and Play

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Sensing Light

By Mark A. Jacobson

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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.