000
00238nam a2200097 4500
084
_2
Colon Classification
245
_a
Popper :
_b
conjectures and refutations /
260
_a
London :
_b
Routledge,
_c
1963.
300
_a
582p. :
942
_c
BK
999
_c
316537
_d
316537