RT Book T1 Tractatus logico-philosophicus = Logisch-philosophische Abhandlung T2 International library of philosophy and scientific method A1 Wittgenstein, Ludwig 1889-1951 A2 Pears, David 1921-2009 LA Latin LA English PP London PB Routledge Kegan YR 1966 ED 3.impr. UL https://ixtheo.de/Record/1070664774 NO Text lat. u. engl