Perri Klass Books

A Not Entirely Benign Procedure

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"Fascinating... Klass writes with wit, intelligence, and a great deal of insight."—The New York Times Book ReviewAcclaimed pediatrician, journalist, and novelist Perri Klass offers a provocative lo...

Treatment Kind and Fair

By Perri Klass

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Other Woman s Children

By Perri Klass

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Love and Modern Medicine

By Perri Klass

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The Mercy Rule

By Perri Klass

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Baby Doctor: A Pediatrician's Training

By Perri Klass

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Treatment kind and fair

By Perri Klass

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Other Women s Children

By Perri Klass

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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.