Mark Teague Books

The trouble with the Johnsons

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Unhappy with their family's move to the city, Elmo and his cat Leon take a nocturnal journey to their old house in the country but find that things are somehow not the same there.

Frog medicine

By Mark Teague

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Elmo Freem cannot seem to do his book report and as a result starts turning into a frog.

Frog Medicine Blue Ribbon Book

By Mark Teague

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When Ludlow begins to play baseball to help combat his fear of night monsters, he is placed so far out in the outfield that he becomes involved with an adjacent game in which a most astonishing thi...

The Field Beyond the Outfield

By Mark Teague

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Pigsty

By Mark Teague

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When Wendell doesn't clean up his room, a whole herd of pigs comes to live with him.

Pigsty.

By Mark Teague

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Que Son Los Cientificos

By Susan Kovacs Buxbaum, Rita Golden Gelman

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No Moon No Milk

By Mark Teague, Chris Babock

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One Halloween night

By Mark Teague

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After a bad beginning, three friends discover that anything can happen on Halloween.

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.