Don Lessem Books

Giant meat-eating dinosaurs
Giant meat-eating dinosaurs

By Don Lessem

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Describes how giant carnivorous dinosaurs hunted, as well as how scientists have learned about them through fossil studies.

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Life is no yuk for the yak
Life is no yuk for the yak

By Don Lessem

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Limericks and drawings accompany descriptions of the characteristics of twenty-six endangered animals and the reasons these are vanishing species.

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Troodon, the smartest dinosaur
Troodon, the smartest dinosaur

By Don Lessem

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Describes the research and paleontological investigation that led to the identification and classification of the dinosaur Troodon.

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Utahraptor
Utahraptor

By Marcie R. Rendon, Don Lessem

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Describes the research and paleontological investigation that led to the identification and classification of one of the most recent dinosaurs to be discovered, a huge, vicious hunter named the Uta...

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Seismosaurus
Seismosaurus

By Don Lessem

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Describes the research and paleontological investigation that led to the identification and classification of the dinosaur Seismosaurus.

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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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