John Henry Books

ABC of poisoning.
ABC of poisoning.

By John Henry

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British Medical Association Guide to Medicines and Drugs BMA Family Doctor
The new guide to medicines drugs
The new guide to medicines drugs

By John Henry

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This home reference guide contains information on all major drugs and medicines in use in modern medical practice. Over 2500 drugs and medications are indexed with detailed full-page descriptions o...

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The British Medical Association concise guide to medicines and drugs
BMA Medicine and Drugs BMA Family Doctor
County Map of Virginia
County Map of Virginia

By John Henry

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Dictionary of Practical Materia Medica
The mind of Cardinal Newman
Law Justice in Tokugawa Japan
British Medical Association guide to medicine and drugs

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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.

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