Hamilton John Books

Presents brief accounts of six environmental disasters including the Exxon Valdez oil spill, the Chernobyl nuclear power plant accident, and the oil field fires in Kuwait.

ECO-careers

By Hamilton John

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Examines twelve different jobs in which people work to preserve our environment including agronomist, environmental lawyer, teacher, and toxicologist.

Eco-groups

By Hamilton John

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Provides information about the history and purpose of such environmental groups as the Sierra Club, the Nature Conservancy, Greenpeace, and Kids for Saving Earth.

The Secretary of State through Warren Christopher

By Hamilton John

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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.