Lehman, H. (1979). Introduction to the philosophy of mathematics. Rowman and Littlefield.
Dyfyniad Arddull ChicagoLehman, Hugh. Introduction to the Philosophy of Mathematics. Totowa, N.J.: Rowman and Littlefield, 1979.
Dyfyniad MLALehman, Hugh. Introduction to the Philosophy of Mathematics. Rowman and Littlefield, 1979.
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