00000cmm a22000004a 4500 UP-8027390931316138856 Buklod 20071106064318.0 a r |||| u| ta 070621s xx ||||| |||||| d (iLib)UPMIN-00000013994 Samsom, Perry. Earth systems today /living text [computer file]. Brooks/cole wadsworth group 2001 computer disks 4 3/4 in. Earth. UPMIN UPMIN-MAIN Electronic Resource