Joan Holub Books

Dig Scoop Ka Boom
Dig Scoop Ka Boom

By Joan Holub

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Persephone The Daring
What Were The Salem Witch Trials
Ivy Green Cootie Queen
Ivy Green Cootie Queen

By Joan Holub

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The garden that we grew
The garden that we grew

By Joan Holub

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Children plant pumpkin seeds, water and weed the garden patch, watch the pumpkins grow, pick them, and enjoy them in various ways.

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Who Was Johnny Appleseed
Who Was Johnny Appleseed

By Joan Holub

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Space dogs on planet K-9
Space dogs on planet K-9

By Joan Holub

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Dinosaurs
Dinosaurs

By Joan Holub

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Easy-to-read, rhyming text describes dinosaurs, from the well-known Tyrannosaurus Rex to the more exotic Coelophysis and Nodosaurus, and provides simple directions for drawing each.

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This Little...
This Little...

By Joan Holub, Daniel Roode

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This Little
This Little

By Joan Holub, Daniel Roode

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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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