"Audiovisuele methoden." . . . . . . . . . "Catalogs"@en . . . . "SCET guide to educational and training equipment"@en . . "Audio visual hand book : [the SCET guide to educational and training equipment]"@en . "Handbooks and manuals"@en . "Audiovisual handbook" . "Audio visual handbook"@en . "Audio visual handbook" . . . . . . . . "Audio visual equipment." . . . .