@BOOK{ Book!D - 91689305,
AUTHOR = "KAKU,MICHIO",
TITLE = "Introduction to superstrings",
LIBRARY= "کتابخانه مرکزی دانشگاه صنعتی امیرکبیر",
SUBJECT = " SUPERSTRING THEORIES  ",
URL = "/book/91689305/Introduction-to-superstrings/"}