First the ancient Greeks hid messages under their hair. Then Mary Queen of Scots completely lost her head because of a cracked code. Now computers create codes no human can crack. This revealing guide gives you the key to unlock the secret languages of spies. Get on the case to discover how to decipher dots aand dashes, fathom flags, and suss a simple cipher. Find out how codes shaped history, won wars nd could even help us talk to aliens. PLUS try your hand at code making and code-breaking. Will you crack under ...
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First the ancient Greeks hid messages under their hair. Then Mary Queen of Scots completely lost her head because of a cracked code. Now computers create codes no human can crack. This revealing guide gives you the key to unlock the secret languages of spies. Get on the case to discover how to decipher dots aand dashes, fathom flags, and suss a simple cipher. Find out how codes shaped history, won wars nd could even help us talk to aliens. PLUS try your hand at code making and code-breaking. Will you crack under pressure?
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Seller's Description:
Fair. Ex-library book, usual markings. Well read with some wear but still very useable. Creases in front and back covers. Quick dispatch from UK seller.
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Seller's Description:
Dispatched, from the UK, within 48 hours of ordering. Though second-hand, the book is still in very good shape. Minimal signs of usage may include very minor creasing on the cover or on the spine. Ex-library book with stamps on the first page, it is also likely to have a small shelf number sticker on the spine.
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Seller's Description:
Very good. All orders are dispatched within 1 working day from our UK warehouse. Established in 2004, we are dedicated to recycling unwanted books on behalf of a number of UK charities who benefit from added revenue through the sale of their books plus huge savings in waste disposal. No quibble refund if not completely satisfied.
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Seller's Description:
Good. All orders are dispatched within 1 working day from our UK warehouse. Established in 2004, we are dedicated to recycling unwanted books on behalf of a number of UK charities who benefit from added revenue through the sale of their books plus huge savings in waste disposal. No quibble refund if not completely satisfied.
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Seller's Description:
Very good. Simply Brit – welcome to our online used book store, where affordability meets great quality. Dive into a world of captivating reads without breaking the bank. We take pride in offering a wide selection of used books, from classics to hidden gems, ensuring there's something for every literary palate. All orders are shipped within 24 hours and our lightning fast-delivery within 48 hours coupled with our prompt customer service ensures a smooth journey from ordering to delivery. Discover the joy of reading with us, your trusted source for affordable books that do not compromise on quality.
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Seller's Description:
Very good. **SHIPPED FROM UK** We believe you will be completely satisfied with our quick and reliable service. All orders are dispatched as swiftly as possible! Buy with confidence! Greener Books.
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Seller's Description:
Good. **SHIPPED FROM UK** We believe you will be completely satisfied with our quick and reliable service. All orders are dispatched as swiftly as possible! Buy with confidence! Greener Books.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
Very good. **SHIPPED FROM UK** We believe you will be completely satisfied with our quick and reliable service. All orders are dispatched as swiftly as possible! Buy with confidence! Greener Books.
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Seller's Description:
Good. Good condition. A copy that has been read but remains intact. May contain markings such as bookplates, stamps, limited notes and highlighting, or a few light stains.