Crilly, T. (2007). 50 mathematical ideas: You really need to know. Quercus Publishing.
Dyfyniad Arddull ChicagoCrilly, Tony. 50 Mathematical Ideas: You Really Need to Know. London: Quercus Publishing, 2007.
Dyfyniad MLACrilly, Tony. 50 Mathematical Ideas: You Really Need to Know. Quercus Publishing, 2007.
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