A. Wallace Hayes Books

Principles and methodsof toxicology

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Principles and methods of toxicology

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Extensively revised and updated with four new chapters and an expanded glossary, this fifth edition provides comprehensive coverage in a manageable and accessible format. The book examines each met...

Principles and methods of toxicology

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Toxicology of the eye, ear, and other special senses

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Principles and methods of toxicology

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Principles and Methods of Toxicology

By A. Wallace Hayes

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Risk Assessment and Regulatory Policy

By A. W. Hayes

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Organophosphorus Insecticides

By A. W. Hayes

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History of Food and Nutrition Toxicology

By A. Wallace Hayes, Esther Haugabrooks

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History of Food and Nutrition Toxicology

By A. Wallace Hayes, Esther Haugabrooks

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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.