Landis R. Heller Books

One nation indivisible
One nation indivisible

By Landis R Heller

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One nation indivisible
One nation indivisible

By Landis R. Heller

Average: 0.00, 0 Ratings

A history of the United States from the discovery and exploration of the New World to the Vietnam involvement and domestic problems of the 1970's. Includes study exercises and excerpts from primary...

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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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