Ken Keffer Books

The truth about nature
The truth about nature

By Stacy Tornio

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"Does moss grow only on the north side of a tree? Should I always wait an hour after swimming? Do hummingbirds really migrate on the backs of other birds? Find out in The Truth About Nature by the...

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The secret lives of animals
The secret lives of animals

By Stacy Tornio

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Montaigne for ever
Montaigne for ever

By Ken Keffer

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Truth about Nature
Truth about Nature

By Ken Keffer, Stacy Tornio

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Hiking Wyoming s Bighorn Mountains
Hiking Wyoming s Bighorn Mountains

By Keffer Ken Naturalist

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"From short scenic day trips to multi-day backpacking excursions, Hiking Wyoming's Bighorn Mountains covers dozens of trails throughout the region including lands of the Bighorn National Forest, th...

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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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