2011-02-181986-12http://hdl.handle.net/2346/17756Not availableapplication/pdfengAgriculture -- Study and teaching -- Audio-visual aidsSpark ignition enginesPeople with disabilities -- Education -- Audio-visual aidsComparing the results of interactive video instruction with video instruction in teaching selected small gasoline engine topics to special needs students in vocational agricultureThesisUnrestricted.