John T. Willig Books

Environmental Tqm

By John T. Willig

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Auditing For Environmental Quality Leadership: Beyond Compliance To Environmental Excellence

By John T., WILLIG, John T. Willig

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Many of the best and most successful companies are no longer content to do the minimum required to achieve compliance with environmental regulations. Instead, a new standard of environmental excell...

Moving Ahead With ISO 14000

By Philip A. Marcus, John T. Willig

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Moving Ahead with ISO 14000 addresses environmental quality management standards from the business manager's point of view. It examines the costs and benefits of conformance in terms of competitive...

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.