interactive computer software, CD-ROMs, pre-recorded video cassettes and laser disks for use in teaching in the fields of reading, literature, mathematics, science, history and social studies, and printed instructional students, parent, and teacher guides related thereto, sold as a unit

'cassett':11 'cd':5 'cd-rom':4 'comput':2 'disk':14 'field':21 'guid':38 'histori':27 'instruct':33 'interact':1 'laser':13 'literatur':24 'mathemat':25 'parent':35 'pre':8 'pre-record':7 'print':32 'read':23 'record':9 'relat':39 'rom':6 'scienc':26 'social':29 'softwar':3 'sold':41 'student':34 'studi':30 'teach':18 'teacher':37 'thereto':40 'unit':44 'use':16 'video':10

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