computer software, instruction manuals, audio cassettes, video discs, compact disc-based materials comprising software and digitized video and audio discs, CD-Roms and multimedia discs, sold as a unit for interactive education in the fields of social science and history

'audio':5,20 'base':12 'cassett':6 'cd':23 'cd-rom':22 'compact':9 'compris':14 'comput':1 'digit':17 'disc':8,11,21,27 'disc-bas':10 'educ':34 'field':37 'histori':42 'instruct':3 'interact':33 'manual':4 'materi':13 'multimedia':26 'rom':24 'scienc':40 'social':39 'softwar':2,15 'sold':28 'unit':31 'video':7,18

21ST CENTURY SOCIAL SCIENCE

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