Title
Summary
Keyword
Display Rights
NDC category
Educational fields
Primary and secondary education
Higher education
Vocational education
Education for the disabled
Senior citizen education
Special support education
Preschool education
Type of media
Text
Web page
Word processor document
Spread sheet
Presentation
Still picture
Video images
Voice
Commentary and text
Teacher's guide
Simulation
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year/month/day - year/month/day
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