1.
Conjectures and Refutations; the Growth of Scientific Knowledge; 0
by Popper, Karl R. (Karl Raimu...
ISBN: 9781013388309
List Price: $32.95
2.
Conjectures and Refutations; the Growth of Scientific Knowledge; 0
by Popper, Karl R. (Karl Raimu...
ISBN: 9781013507366
List Price: $21.95