@BOOK{ Book!D - 91707685,
AUTHOR = "Lipschutz, Seymour",
TITLE = "2000 solved problems in discrete mathematics",
LIBRARY= "کتابخانه مرکزی دانشگاه صنعتی امیرکبیر",
SUBJECT = " Mathematics - Problems, exercises, etc  ",
URL = "/book/91707685/2000-solved-problems-in-discrete-mathematics/"}