@BOOK{ Book!D - 93067705,
AUTHOR = "/ Reazvan Gelca, Titu Andreescu",
TITLE = "Putnam and beyond",
LIBRARY= "کتابخانه مرکزی و مرکز اطلاع رسانی دانشگاه محقق اردبیلی ره",
SUBJECT = "William Lowell Putnam Mathematical Competition,Mathematics Problems, exercises, etc,Mathematics- Competitions",
URL = "/book/93067705/Putnam-and-beyond/"}