TY  - BOOK
AU  - Wittgenstein, Ludwig,
TI  - On certainty
SN  - 0631169407
U1  - 121.63 
PY  - 1979/// [reprinted 1984]
CY  - Oxford
PB  - Basil Blackwell
KW  - Certainty
N1  - Includes index
ER  -