000
00278nam a2200121Ia 4500
100
_a
Popper, Karl R.
020
_a
0-09-III721-6
942
_c
BK
245
_a
The logic of scientific discovery
260
_a
Hutchinson & co ltd, London
_c
1972
082
_a
501 Pop
300
_a
480
999
_c
5049
_d
5049