videocassettes and video discs featuring educational information for children in the fields of astronomy, biology, earth science, chemistry, and physics

'astronomi':14 'biolog':15 'chemistri':18 'children':9 'disc':4 'earth':16 'educ':6 'featur':5 'field':12 'inform':7 'physic':20 'scienc':17 'video':3 'videocassett':1

science materials, printed instructional manuals and educational materials for children, namely books, catalogs and study guides, in the fields of astronomy, biology, earth science, chemistry, and physics

'astronomi':21 'biolog':22 'book':12 'catalog':13 'chemistri':25 'children':10 'earth':23 'educ':7 'field':19 'guid':16 'instruct':4 'manual':5 'materi':2,8 'name':11 'physic':27 'print':3 'scienc':1,24 'studi':15

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