Robert Hays Books

Principles of technical writing

By Robert Hays

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PRACTICALLY SPEAKING in business industry and government.

By Robert Hays

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A Race at Bay

By Robert Hays

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Drawing on four decades of New York Times editorials, Robert G. Hays demonstrates the magnitude of the conflict between Native American and white European cultures as settlers and adventurers sprea...

Editorializing The Indian Problem

By Robert Hays

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Circles in the water

By Robert Hays

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Blood on the Roses

By Robert Hays

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Homeward bound

By Duwayne Dunham

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Three pets set out across a wilderness to find their family and the children they love and miss.

Equinox and Other Stories

By Robert Hays

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Blood on the Roses

By Robert Hays

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Blood on the Roses

By Robert Hays

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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.