multimedia computer software and instruction manuals, prerecorded audio cassettes, prerecorded video discs, prerecorded digitized video and audio discs, compact disc-based materials comprising computer software and prerecorded multimedia discs, all sold as a unit and all used in the field of interactive education in science, social studies, math and language arts

'art':52 'audio':8,17 'base':22 'cassett':9 'compact':19 'compris':24 'comput':2,25 'digit':14 'disc':12,18,21,30 'disc-bas':20 'educ':44 'field':41 'instruct':5 'interact':43 'languag':51 'manual':6 'materi':23 'math':49 'multimedia':1,29 'prerecord':7,10,13,28 'scienc':46 'social':47 'softwar':3,26 'sold':32 'studi':48 'unit':35 'use':38 'video':11,15

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