TY  - BOOK
AU  - Wittgenstein,Ludwig, x
AU  - x
TI  - Tractatus logico-philosophicus: x
SN  - 0415254086
U1  - 192/W831t 
PY  - 1974///
CY  - London
PB  - Routledge
KW  - Logic, Symbolic and mathematical
KW  - Philosophy
N1  - x
ER  -