skos:altLabel | - Sagan
- LAW
- BHA
- billions and billions
- sagan
- Carl Edward Sagan
- Carl Sagan Chair
- Carl Sagan#Billions and billions
- Carl Sagan#Sagan units
- Carl Sagan#Sagan's number
- Carl Sagan#Sagan_units
- Carl Sagan's
- Carl Sargon
- Dr. Carl Sagan
- Sagan Unit
- Sagan, Carl
- the name of his idol astrophysicist
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