1. Proofs without words : exercises in visual thinking

by Nelsen, Roger B.

Material type: book Book; Format: print ; Literary form: Not fiction Publisher: Washington: Mathematical Association of America, 1993Availability: Items available for loan: [Call number: 510.223 NEL] (1).
2. Proofs without words II : more exercises in visual thinking

by Nelsen, Roger B.

Material type: book Book; Format: print ; Literary form: Not fiction Publisher: Washington: Mathematical Association of America, 2000Availability: Items available for loan: [Call number: 510 NEL] (1).

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