C. Gregory Books

Star Trek Parallel Narratives
Star Trek Parallel Narratives

By C. Gregory

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Heart Under the Microscope
Heart Under the Microscope

By Clive Gregory

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Star Trek
Star Trek

By C. Gregory

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Accuplacer skill practice
Accuplacer skill practice

By C. Gregory

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Two practice tests on sentence skills, reading comprehension, arithmetic, and essays.

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Related Articles from our Blog

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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