"Littleton (Colo.)" . . . . . . . . "Columbine High School shooting : student violence" . . . . . . . "Provides an account of the violent student shootings that took place at Columbine High School in Colorado in 1999." . . . "Juvenile works" . . . . . . . "Schule." . . "1999" . . "Gewalttätigkeit." . . "Schusswaffe." . .