Gretchen M. Lentz Books

Appleton & Lange Review of Obstetrics and Gynecology

By Louis A. Vontver, Victor Y. Fujimoto, Roger Smith, Vern Katz, Sharon Phelan, Gretchen M. Lentz, Lisa Lepine

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Comprehensive Gynecology

By David M Gershenson MD, Gretchen M Lentz MD, Vern L. Katz MD, Rogerio A. Lobo MD

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In the 25 years since the first edition of Comprehensive Gynecology, many scientific advances have occurred in medical practice. The first four editions were largely the work of the original four e...

Urogynecology Current Topics in Obstetrics Gynaecology

By Gretchen M. Lentz

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Comprehensive Gynecology

By Fidel A. Valea, Rogerio A. Lobo, Gretchen M. Lentz, David M. Gershenson

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Comprehensive Gynecology

By Fidel A. Valea, Rogerio A. Lobo, Gretchen M. Lentz, David M. Gershenson

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Urogynecology: Diagnosis and Treatment of Female Incontinence

By G.M.L. Lentz

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Comprehensive Gynecology Online

By David M. Gershenson, Rogerio A. Lobo, Vern L. Katz, Gretchen M. Lentz

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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.