Douglas A. Drossman Books

The Functional Gastrointestinal Disorders: Diagnosis, Pathophysiology, and Treatment: A Multinational Consensus

By Joel E. Richer, Douglas A. Drossman

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Handbook of Gastroenterologic Procedures

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Index Numbers Essays in Honour of Sten Malmquist

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Professor Sten Malmquist constructed the Malmquist quantity index and in doing so developed a distance function defined on a consumption space. This function is the consumer analog to the Shephard...

Manual of gastroenterologic procedures

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The Functional Gastrointestinal Disorders Diagnosis Pathophsiology and Treatment

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Rome II

By Douglas A. Drossman

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Rome II

By Douglas A. Drossman

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Rome III

By Douglas Ed. Drossman

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Contemporary Diagnosis and Management of Irritable Bowel Syndrome

By Douglas A. Drossman

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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.