The Art of Problem Solving, Vol. 1: The Basics by Sandor Lehoczky, (Paperback),

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The Art of Problem Solving, Vol. 1: The Basics by Sandor Lehoczky, (Paperback), :
$29.90

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Used for only a few days but absolutely no marks. You can see front page has little sign of worn but otherwise it is brand new inside the cover. I have volume 2 for sale too.

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The Art of Problem Solving, Vol. 1: The Basics by Sandor Lehoczky, (Paperback), :
$29.90