Rosemary R. Gagan Books

For Patients of Moderate Means

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"Between 1890 and 1910 scientific and technological innovation transformed the custodial Victorian charity hospital for the sick poor into the primary source of effective acute medical care for all...

A Sensitive Independence

By Rosemary R. Gagan

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Sensitive Independence

By Rosemary R. Gagan

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For Patients of Moderate Means

By Rosemary R. Gagan, David Gagan

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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.