TY  - BOOK
AU  - Wittgenstein,Ludwig
AU  - Anscombe,G.E.M.
AU  - Wright,G.H.von
TI  - On certainty
SN  - 9780061316869 (pbk.)
U1  - 121.6 WIT 
PY  - 1972///
CY  - New York
PB  - Harper Torchbooks
KW  - Certainty
N1  - Gratis
David Lelyveld
ER  -