000
00309pam a2200133a 44500
082
_a
501
_b
F85v
100
_a
Frank, Philipp
245
1
_a
THE VALIDATION OF SCIENTIFIC THEORIES
260
_a
N. Y.
_b
Collier
_c
1961
300
_a
220
650
_a
Science. Philosophy
964
_g
CIRC
997
_a
58822 C
999
_c
426321
_d
426321