TY - BOOK ID - 137567990 TI - Introductory modal logic PY - 1986 SN - 0268011591 PB - Notre Dame University of Notre Dame press DB - UniCat KW - Modality (Logic) KW - Modality (Logic). UR - https://www.unicat.be/uniCat?func=search&query=sysid:137567990 AB - ER -