yumi2012 Senior | Next Rank: 100 Posts View User Profile Posts: 64 Joined: Mon Jul 23, 2012 1:59 pm Thanked: 1 times Is this OG book still valid? by yumi2012 » Tue Jul 23, 2013 7:08 pm I heard that there was a little change with the GMAT test sections and wonder if this 13th ed. OG book still useful. Any advice? Attachments Top Quote
