@BOOK{ Book!D - 90430487,
AUTHOR = " Gordon D. Newby",
TITLE = "Ibn Khaldun and Frederick Jackson Turner:",
LIBRARY= "مرکز و کتابخانه مطالعات اسلامی به زبان‌های اروپایی",
SUBJECT = "African Studies,General",
URL = "/book/90430487/Ibn-Khaldun-and-Frederick-Jackson-Turner/"}