J. C. Greenburg Books

Andrew Lost 2: In the Bathroom

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When Andrew and Judy’s neighbor gives her dog a bath, microscopic Andrew and Judy find themselves washed off the dog and lost in the bathroom! They’ll have to use their wits–and Thudd’s storehouse...

Andrew Lost 8: In the Deep

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Andrew, Judy, and Thudd drive the Water Bug deep into the ocean, where the only light comes from strange glowing creatures. Just as they're passing over the deepest place on earth, the trusty Water...

Andrew Lost 13: In the Garbage

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Andrew, Judy, and Thudd have time-traveled out of an ice age only to find themselves shrunk down and tossed out with the garbage! As they get up close and personal with half-eaten hog dogs, soggy p...

Andrew Lost 4: In the Garden

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Andrew, his cousin Judy, and super-smart robot Thudd hitch a ride out of the kitchen on the back of a fly and end up in the garden. The view is awfully nice from the head of a daisy, but time is ru...

Andrew Lost 12: In the Ice Age

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Andrew, Judy, and Thudd have escaped the dinosaurs only to find themselves surrounded by the woolly mammoths of the Ice Age! Can they locate their lost Uncle Al and travel back to their own time be...

Andrew Lost 15: In the Jungle

By J. C. Greenburg

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Andrew, Judy, and Thudd have landed in the Australian rain forest. They must find a way to the river and Uncle Al, but they're still the size of bugs! They dodge rhinoceros beetles and tree kangaro...

Andrew Lost 3: In the Kitchen

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Andrew, his cousin Judy, and super-smart robot Thudd escape the bathtub–only to get flushed down the toilet! Now they have to find their way through a maze of pipes to the kitchen sink. But the kit...

Andrew Lost 6: In the Whale

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After escaping an underwater volcano, Andrew, Judy, and Thudd drive their submersible vehicle, the Water Bug, right down a whale’s throat!This is the second in a four-book set that will take the ki...

Andrew Lost 9: In Time

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The evil Dr. Kron-Tox has kidnapped Uncle Al and whisked him away in his time machine! Luckily, Andrew has a time machine of his own. But like most of Andrew’s inventions, the Time-a-Tron doesn’t w...

Andrew Lost 16: In Uncle Al

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Some families are ARE a little too close! A shock from a numbfish has shrunk Andrew, Judy, and Thudd to microscopic size. Just when they think Uncle Al has rescued them, a mosquito bite injects the...

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.