Columbia subject headings:
Supernovae--Charts, diagrams, etc.
Supernovae--Research--Amateurs' manuals.
Harvard subject headings:
Supernovae--Charts, diagrams, etc.
Supernovae--Research--Amateurs' manuals.
Princeton subject headings:
Supernovae--Charts, diagrams, etc.
Supernovae--Research--Amateurs' manuals.