Paul Kobasa Books

Subtraction

By Joseph Midthun, Paul Kobasa

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A Look At

By Tom Evans, Paul Kobasa

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Student Discovery Science Encyclopedia

By Inc World Book, Paul Kobasa

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Telescopes and space probes.

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"Introduction to telescopes and space probes forprimary and intermediate grade students. Includes fun facts, glossary, resource list and index"--Provided by publisher.

"Introduction to the un and other stars, providing to primary and intermediate grade students information on their features and exploration. Includes fun facts, glossary, resource list and index"--...

Harlem Hellfighters

By Paul Kobasa, Julia Garstecki

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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.