TY  - BOOK
AU  - Popper ,Karl R .
TI  - Conjectures and refutations : the growth of scientific knowledge / 
SN  - 0415043182
U1  - 121 
PY  - 1972/// (rep. 1985)
CY  - London : 
PB  - Routledge , 
KW  - THEORY OF KNOWLEDGE
N1  - Include index
ER  -