Harper Robert Books

Practical foundations for programming languages

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"This book offers a fresh perspective on the fundamentals of programming languages through the use of type theory"-- "Syntactic Objects Programming languages are languages, a means of expressing c...

Practical Foundations for Programming Languages

By Harper Robert

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Practical Foundations for Programming Languages

By Harper Robert

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Practical Foundations for Programming Languages

By Harper Robert

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Observations on the Dispute Between the United States and France

By Harper Robert

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Transcendental Misappropriation Book One of the Pentacle Series

By Harper Robert

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Types in Compilation

By Harper Robert

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Deadly Ransom

By Andrea Woodhead, Harper Robert

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Assyrian and Babylonian Literature

By Harper Robert

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Called to Be Victorious Workbook

By Harper Robert

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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.