TY - BOOK ID - 133534036 TI - A System of Logic: Ratiocinative and Inductive, 7th Edition, Vol. I PY - 2011 PB - Project Gutenberg DB - UniCat KW - Knowledge KW - Theory of UR - https://www.unicat.be/uniCat?func=search&query=sysid:133534036 AB - ER -