, ▁created ▁in ▁ 1 9 6 3 , ▁and ▁counts ▁with ▁three ▁central ▁libraries , ▁six ▁documentation ▁cent ers , ▁one ▁special ized ▁library , ▁and ▁nine ▁regional ▁libraries . ▁By ▁ 2 0 0 8 , ▁the ▁library ▁collection ▁was ▁composed ▁of ▁ 6 8 1 , 9 2 8 ▁titles , ▁ 5 1 % ▁of ▁which ▁were ▁books ▁or ▁th esis ▁in ▁printed ▁and ▁digital ▁format , ▁and ▁ 3 7 % ▁were ▁printed ▁or ▁micro film ▁journ als ▁and ▁mag az ines . ▁ ▁The ▁Mario ▁Car v aj al ▁Library , ▁which ▁was ▁created ▁under ▁the ▁technical ▁advise ▁of ▁the ▁Rock ef eller ▁Foundation , ▁is ▁one ▁of ▁the ▁largest ▁university ▁libraries ▁in ▁the ▁country ▁with ▁ ▁of ▁constructed ▁space . ▁ ▁Rank ings ▁ ▁The ▁following ▁is ▁a ▁summary ▁of ▁the ▁University ▁of ▁Valle ▁rank ings : ▁ ▁< li > ▁Par enth esis ▁number ▁indicates ▁national ▁ranking ▁< li > ▁This ▁ranking ▁is ▁published ▁twice ▁a ▁year . ▁Sem esters ▁are ▁separated ▁by ▁"/ " ▁< li > ▁This ▁is ▁a ▁national ▁ranking ▁only ▁ ▁The ▁university ▁is ▁consist ently ▁ranked ▁among ▁the ▁top ▁five ▁higher ▁education ▁institutions ▁in ▁Colombia . ▁ ▁Research ▁ ▁The ▁university ▁has ▁a ▁long ▁tradition ▁in ▁research ▁that ▁can ▁be ▁trac ed ▁to ▁its ▁orig ins . ▁ ▁It ▁is ▁home ▁to ▁an ▁excell ence ▁research ▁center , ▁ 6 ▁research ▁cent ers , ▁ 3 ▁research ▁instit utes , ▁and ▁ 2 7 6 ▁groups , ▁of ▁which ▁