TY  - BOOK
AU  - Russell, Bertrand
AU  - Russell, Bertrand
TI  - Our knowledge of the external world : as a field for scientifc method in phiosophy
U1  - R2xM72 
PY  - 1993///
CY  - London
PB  - Routledge
KW  - R2xM72
ER  -