"adult education." . . "neformalno učenje." . . "USA." . . "informal education." . . . . "vseživljenjsko učenje." . . "lifelong learning." . . "izobraževanje odraslih." . . "non-formal education." . . "neformalno izobraževanje." . . "Lebenslanges Lernen." . . . . . . . "Lifelong learning : formal, nonformal, informal and self-directed"@en . . . . . . . . . . . . . . . . . . . . . . "Lifelong learning : formal, nonformal, informal, and self-directed" . "Lifelong learning : formal, nonformal, informal, and self-directed"@en . . . . . . . "Lifelong learning formal, nonformal, informal, and self-directed"@en . . . . . "Lifelong Learning: Formal, Nonformal, Informal, and Self-Directed" . . . .