Lillian Kao Books

Surgery: PreTest Self Assessment and Review, Eleventh Edition

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Over 500 USMLE-style questions and answers referenced to core textbooks and journal articles. Complete explanations discuss right and wrong answer options. All questions are reviewed by students wh...

Surgery PreTest Self-Assessment and Review, Thirteenth Edition

By Lillian S. Kao

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"The closest you can get to seeing the USMLE Step 2 CK without actually taking it. Surgery: PreTest Self-Assessment & Review is the perfect way to assess your knowledge of surgery for the USMLE St...

Success in Academic Surgery

By Mark S. Cohen, Lillian Kao

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Surgery PreTest Self Assessment and Review Fourteenth Edition

By Tammy Lee, Lillian Kao

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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.