@BOOK{ Book!D - 90213519,
AUTHOR = " Mark V. Lawson, Heriot-Watt University, Edinburgh.",
TITLE = "A first course in logic /",
LIBRARY= "مرکز و کتابخانه مطالعات اسلامی به زبان‌های اروپایی",
SUBJECT = "Logic, Symbolic and mathematical, Problems, exercises, etc.,Logic.,Logic, Symbolic and mathematical.,Logic.,MATHEMATICS-- General.",
URL = "/book/90213519/A-first-course-in-logic/"}