TY  - BOOK
AU  - Wittgenstein, Ludwig,
AU  - Anscombe, Gertrude Elizabeth Margaret.
AU  - Wright, Georg Henrik von,
TI  - On certainty
U1  - 121.6 WIT 
PY  - 1969///
CY  - Oxford
PB  - Blackwell
KW  - Certainty
N1  - Added t.p. in German: èUber Gewissheit; Parallel German and English texts, each paged separately
ER  -