TY  - BOOK
AU  - Popper Karl R
TI  - Conjectures and refutations :  The growth of scient   
SN  - 0 7100 6507 8
U1  - R2, L2 
PY  - 1972///
CY  - London
PB  - Routledge U. K.        
KW  -  Philosophy
KW  - Epistemology
ER  -