Robert L. Heller Books

Earth Science

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An earth science text, stressing an awareness of the environment, with related laboratory activities to lead the student into discovering basic facts and concepts of meteorology, oceanography, geol...

Challenges to Science - Earth Science Teacher's Edition, Second Edition

By Robert L. Heller

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Earth science

Average: 0.00, 0 Ratings

Earth science

Average: 0.00, 0 Ratings

A science text book for the middle grades which stresses basic, general concepts of earth science, the environment, and space science.

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.