@BOOK{ Book!D - 98966906,
AUTHOR = "/ [by] Herbert B. Enderton,Enderton",
TITLE = "A mathematical introduction to logic",
LIBRARY= "کتابخانه مرکزی و مرکز اسناد دانشگاه تهران",
SUBJECT = "Logic, Symbolic and mathematical",
URL = "/book/98966906/A-mathematical-introduction-to-logic/"}