prerecorded videotapes, audio tapes and CD-ROMS featuring entertainment in the field of science and educational materials in the field of science; computer programs for teaching in the science fields; interactive video games of virtual reality comprised of computer hardware and software

'audio':3 'cd':7 'cd-rom':6 'compris':38 'comput':24,40 'educ':17 'entertain':10 'featur':9 'field':13,21,31 'game':34 'hardwar':41 'interact':32 'materi':18 'prerecord':1 'program':25 'realiti':37 'rom':8 'scienc':15,23,30 'softwar':43 'tape':4 'teach':27 'video':33 'videotap':2 'virtual':36

DR. U

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