@BOOK{ Book!D - 100948994,
AUTHOR = "/ by N.Piskunov",
TITLE = "Differential and integral calculus",
LIBRARY= "کتابخانه مرکزی دانشکدگان کشاورزی و منابع طبیعی (دانشگاه تهران)",
SUBJECT = "Calculus",
URL = "/book/100948994/Differential-and-integral-calculus/"}