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

'astronomi':11 'biolog':12 'chemistri':15 'children':6 'earth':13 'educ':3 'featur':2 'field':9 'inform':4 'physic':17 'scienc':14 '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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