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- Jul 2022
various bibliographic catalog from the end of the '800 and '900 (from Paul Otlet/Henry La Fontaine Munaneum to Ranganathan faceted classification system passing through Niklas Luhmann, Carl Sagan and many others
Look into Henry La Fontaine, Mundaneum, Ranganathan's faceted classification system.
What was Carl Sagan's system?