@BOOK{ Book!D - 103397980,
AUTHOR = "/ Derek Goldrei",
TITLE = "Propositional and predicate calculu",
LIBRARY= "كتابخانه مركزی و مركز اسناد دانشگاه شهيد چمران",
SUBJECT = "Propositional calculus--Problems, exercises, etc,Predicate calculus--Problems, exercises, etc",
URL = "/book/103397980/Propositional-and-predicate-calculu/"}