@BOOK{ Book!D - 103418354,
AUTHOR = "/ John Stillwell",
TITLE = "The four pillars of geometry",
LIBRARY= "كتابخانه مركزی و مركز اسناد دانشگاه شهيد چمران",
SUBJECT = "Geometry--Textbooks",
URL = "/book/103418354/The-four-pillars-of-geometry/"}