@BOOK{ Book!D - 92894922,
AUTHOR = "",
TITLE = "Collineations and conic sections :",
LIBRARY= "كتابخانه مركزی و مركز اسناد دانشگاه مازندران",
SUBJECT = "Geometry, Projective ;",
URL = "/book/92894922/Collineations-and-conic-sections/"}