Robert Engler Books

Politics of Oil

By Robert Engler

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The Brotherhood of Oil: Energy Policy and the Public Interest

By Robert Engler

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Brotherhood of Oil

By Robert Engler

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America s Energy

By Robert Engler

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America's energy

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Tracing the history of the oil, coal, hydroelectric, and nuclear industries, articles from the journal The Nation detail how special interests have shaped public policy through the years.

Brotherhood of Oil A mentor book

By Robert Engler

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Brotherhood of Oil

By Robert Engler

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Child s Play

By Robert Klein Engler

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The Post Gloria Essays

By Robert Klein Engler

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Paper Rings

By Robert Engler

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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.