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€12.40
By G. Pólya
A demontration of how the true mathematician learns to draw unexpected analogies, tackly problems from unusual angles and extract a little more onformaiton from the data; a collection of truly practical lessons.
€23.15 Original price was: €23.15.€15.00Current price is: €15.00.
€24.00
€40.00
€12.00