Eric Marcus Books

The Principles and Practice of Narrative Medicine

By Craig Irvine, Eric Marcus, Nellie Hermann, Maura Spiegel, Edgar Rivera Colsn, Danielle Spencer, Rita Charon, Sayantani DasGupta

Average: 0.00, 0 Ratings

What if someone I know is gay?

By Eric Marcus

Average: 0.00, 0 Ratings

What If?

By Eric Marcus

Average: 0.00, 0 Ratings

"No question goes unanswered in this important book about being gay. All the basics--and not-so-basics--are covered in more than one hundred questions asked by real teens."--Amazon.com.

What If?

By Eric Marcus

Average: 0.00, 0 Ratings

"No question goes unanswered in this important book about being gay. All the basics--and not-so-basics--are covered in more than one hundred questions asked by real teens."--Amazon.com.

Modern Ego Psychology and Human Sexual Experience

By Eric Marcus

Average: 0.00, 0 Ratings

Modern Ego Psychology and Human Sexual Experience

By Eric Marcus

Average: 0.00, 0 Ratings

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.