Jack E. Davis Books

T. Rex Trick-or-Treats

By Lois G. Grambling

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A Tyrannosaurus rex cannot decide what kind of costume to wear on Halloween night.

T. Rex Trick or Treats

By Lois G. Grambling

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T. Rex and the Mother's Day Hug

By Lois G. Grambling

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Eager to do something special for Mother's Day, T. Rex decides to surprise his mother by decorating her car.

T. Rex and the Mother's Day Hug

By Lois G. Grambling

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Yo yo man

By Daniel Manus Pinkwater

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Third grade improves dramatically for a boy after he makes up his mind to win the upcoming yo-yo tournament.

Yo-yo man

By Daniel Manus Pinkwater

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Third grade improves dramatically for a boy after he makes up his mind to win the upcoming yo-yo tournament.

Halfway Hank

By Joe Fallon

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Hank always does things halfway, but one day he finds a way to finish something while still being true to himself.

Monster Goose

By Judy Sierra

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A collection of twenty-five nursery rhymes, rewritten to feature vampires, ghouls, mummies, the Loch Ness monster, and other fearsome creatures.

Race Against Time

By Justine Davis

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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.