Reach into your pocket. Look in your wallet. What you will find is one of the oldest inventions known to mankind, currency. Currency provides an historical overview of the monetary system, which began thousands of years ago with the bartering system, its evolution to metal coins in the 600s B.C., and the new currencies of modern day. The book includes a discussion on the concept of currency, its developers, the role of currency in daily life, and its continuing development. Book jacket.
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What's an Audio Format Audio format refers to the way an audiobook is recorded. Not all audiobooks have the same formats. Classic Audio: A human reading an audiobook without the text displayed. VOICEtext (H): Human narrator with text that you can follow along with as it reads. VOICEtext (S): Synthetic voice with text you can follow along with as it reads.
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