Douglas Harker Books

Helicopters
Helicopters

By Kate Petty

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Examines the functions and characteristics of different kinds of helicopters, including military and police helicopters.

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See inside an oil rig and tanker
See inside an oil rig and tanker

By R.J. Unstead, Jonathan Rutland

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comperstion

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Helicopters
Helicopters

By Kate Petty

Average: 0.00, 0 Ratings

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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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