TY - BOOK ID - 821126 TI - Understanding natural deduction : a formalist approach to introductory logic PY - 1974 SN - 0822101289 PB - Encino Dickenson DB - UniCat KW - Mathematical logic KW - Logic KW - -Argumentation KW - Deduction (Logic) KW - Deductive logic KW - Dialectic (Logic) KW - Logic, Deductive KW - Intellect KW - Philosophy KW - Psychology KW - Science KW - Reasoning KW - Thought and thinking KW - Outlines, syllabi, etc KW - Methodology KW - -Outlines, syllabi, etc KW - Argumentation UR - https://www.unicat.be/uniCat?func=search&query=sysid:821126 AB - ER -