Mark Stehlik Books

Karel the Robot Second Edition and Karel the Genie Mac Software to Accompany Karel the Robot Ser

By Richard E. Pattis

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Karel

By Joseph Bergin, Richard E. Pattis, Jim Roberts, Mark Stehlik

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Computing Concepts with Java Essentials

By C. Horstmann

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Karel J Robot

By Joseph Bergin

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"Karel J Robot" is an introduction to computer programming for novices. It uses the Java programming language to introduce the principles of object-oriented programming. "Karel J Robot" stresses pr...

Computing Concepts with C Essentials Karel

By Horstmann

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Monty Karel

By Rich Pattis, Joseph Bergin, Jim Roberts, Mark Stehlik

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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.