1. How to prove it : a structured approach

by Velleman, Daniel J.

Material type: book Book; Format: print ; Literary form: Not fiction Publisher: Cambridge: Cambridge University Press, 1994Availability: Items available for loan: [Call number: 511.3 VEL] (2).
2. How to prove it : a structured approach

by Velleman, Daniel J.

Edition: 2nd ed.Material type: book Book; Format: print ; Literary form: Not fiction Publisher: Cambridge: Cambridge University Press, 2006Availability: Items available for loan: [Call number: 511.3 VEL] (1).

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