@BOOK{ Book!D - 101490247,
AUTHOR = "/ compiled and with solutions by Samuel Gritzer",
TITLE = "International mathematical olympiads, 1959-1977",
LIBRARY= "كتابخانه مركزی دانشگاه بين المللی امام خمينی (ره) قزوين",
SUBJECT = "Mathematics Problems, exercises, etc,Mathematics- Competitions",
URL = "/book/101490247/International-mathematical-olympiads-19591977/"}