William Muir Manger Books

Pheochromocytoma

By W.M. Manger, William Muir Manger, R.W. Jr. Gifford

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Pheochromocytoma

By Ray W. Gifford, William Muir Manger

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Our greatest threats

By William Muir Manger

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Pheochromocytoma

By Ray W. Gifford, William Muir Manger

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101 questions and answers about hypertension

By William Muir Manger

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"Hypertension, or high blood pressure, affects an estimated 50 million Americans and is a major contributor to cardiovascular disease, the leading cause of death in the United States. Through prop...

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.