Kathleen Weidner Zoehfeld Books

What's alive?

By Kathleen Weidner Zoehfeld

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Dinosaur tracks

By Kathleen Weidner Zoehfeld

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Terrible tyrannosaurs

By Kathleen Weidner Zoehfeld

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Describes what fossils tell us about the physical characteristics and behavior of the large carnivorous Tyrannosaurus rex.

Ghost mysteries

By Kathleen Weidner Zoehfeld

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Ghosts are a part of our lives, in the spookiest of ways! In Ghost Mysteries Kathleen Weidner Zoehfeld takes readers on an amazing trip though the history of ghosts and their place in literature, m...

Growing up stories

By Kathleen Weidner Zoehfeld

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Disney's Mulan

By Kathleen Weidner Zoehfeld

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When China is invaded by the Huns, Mulan decides that she must disguise herself as a soldier -- a man -- to fight in place of her ill father, who has been called up for war.

Prehistoric mammals

By Kathleen Weidner Zoehfeld

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"From woolly mammoths to saber-toothed cats, prehistoric mammals once roamed Earth. With beautiful and engaging illustrations, authentic photos, and accessible text, kids will learn all about these...

Seal Pup grows up

By Kathleen Weidner Zoehfeld

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Describes how Seal Pup's mother prepares him for life on his own.

Seal Pup grows up

By Kathleen Weidner Zoehfeld

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Describes how Seal Pup's mother prepares him for life on his own.

Manatee winter

By Kathleen Weidner Zoehfeld

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A mother manatee and her little calf travel from the Gulf of Mexico through dangerous water full of speeding boats.

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.