Mark Dubowski Books

The man who discovered Pluto
The man who discovered Pluto

By Mark Dubowski

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Recounts the story of Clyde Tombaugh and how he discovered the hidden planet we now call Pluto.

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Don t believe it
Don t believe it

By Mark Dubowski

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Recounts several popular beliefs and the scientific reasons why they are not true.

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Snug Bug
Snug Bug

By Cathy East Dubowski, Mark Dubowski

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Relates the bedtime activities of a little bug in a big house.

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Salem Goes to Rome Sabrina the Teenage Witch Salem s Tails Unnumbered
Big Sweep Rocket Power Ready To Read
Rugrats Movie
Cowboy Roy All Aboard Reading
Rugrats in Paris the Movie Rugrats in Paris
Salem s Tails 1
Salem s Tails 1

By Mark Dubowski

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Titanic
Titanic

By Mark Dubowski

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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.

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