@BOOK{ Book!D - 77784617,
AUTHOR = "Modenov, Peter Sergeevich",
TITLE = "Problems in geometry",
LIBRARY= "کتابخانه مرکزی و مرکز اطلاع رسانی دانشگاه فردوسی مشهد",
SUBJECT = "Problems, exercises, etc ، Geometry",
URL = "/book/77784617/Problems-in-geometry/"}