Richard D. Covey Books

Why I need my sleep
Why I need my sleep

By Diane H. Pappas

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Let s all be water wise
Let s all be water wise

By Richard D. Covey

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Zak the Yak and the Kid Guardians teach children about conserving water.

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I always turn off the lights
I always turn off the lights

By Richard D. Covey

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Zak the Yak and the Kid Guardians teach children about conserving energy.

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What is global warming
What is global warming

By Richard D. Covey

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Zak the Yak and the Kid Guardians teach children about global warming.

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Let s keep our oceans rivers and lakes clean
Let s keep our oceans rivers and lakes clean

By Richard D. Covey

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Zak the Yak and the Kid Guardians teach children about water pollution.

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Ugh Don t be a litterbug
Ugh Don t be a litterbug

By Richard D. Covey

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Zak the Yak and the Kid Guardians teach children about the importance of recycling.

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What s happening to the rain forests
What s happening to the rain forests

By Richard D. Covey

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Zak the Yak and the Kid Guardians teach children about the shrinking rain forests.

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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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