- unitdate
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{"type"=>"inclusive", "value"=>"n.d."}
- unittitle
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{"value"=>"[Essay on enchantment, technology, and education] Holograph (incomplete)"}
- physdesc
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{"value"=>"ms.", "format"=>"simple"}
{"format"=>"structured", "physdesc_components"=>[{"value"=>"25 p", "name"=>"extent"}], "supress_display"=>true}
- container
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{"value"=>"In his: Holograph notebook [1966-1967], p. 21, 23-27, 29, 31-33, 35, 37, 39-41, 43, 45, 47, 49-53, 55, 155"}
- extent_statement
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25 p
- unitid
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{"type"=>"local_mss", "value"=>"549329"}