TY - BOOK ID - 986700 TI - A companion to Wittgenstein's Tractatus PY - 1971 SN - 052104264X PB - Cambridge University Press DB - UniCat KW - Logic KW - Wittgenstein, Ludwig J.J. KW - Wittgenstein, Ludwig UR - https://www.unicat.be/uniCat?func=search&query=sysid:986700 AB - ER -