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Riddles in mathematics : A book of paradoxes / Eugene P. Northrop.- London : Hodder and Stoughton Ltd., 1947.- X, 242 p. ; 21 cm.
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- Northrop, Eugene Purdy
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-80/1
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Riddles in mathematics : A book of paradoxes / Eugene P. Northrop.- London : Hodder and Stoughton Ltd., 1947.- X, 242 p. ; 21 cm.