IMO 2007 SHORTLISTED PROBLEMS - INTERNATIONAL MATHEMATICAL OLYMPIAD-IMO48 VIETNAM

LINK ORIGINAL:https://www.yumpu.com/en/document/view/15720149/imo-2007-shortlisted-problems-international-mathematical-olympiad#
LINK ALTERNATIVO PARA BAJAR EL LIBRO
http://www.mediafire.com/download/cuwpam5jgqlntqv/IMO_2007_Shortlisted_Problems_-_International_Mathematical_Olympiad.pdf