TY  - BOOK
AU  - Wittgenstein,Ludwig
AU  - Anscombe,G.E.M.
AU  - Wright,G.H.von
AU  - 
AU  - 
TI  - On certainty
T2  - Harper torchbooks
AV  - B3376.W949.O534 1972 
PY  - 1969///
CY  - New York
PB  - Harper and Row
KW  - Philosophy-Ancient
KW  - Certainty
N1  - Added t.p. in German; Translation of Uber Gewissheit; 2
ER  -