Columbia subject headings:
Harvard subject headings:
American Astronomical Society--Directories.
Astronomers--Directories.
Astrophysicists--Directories.
Princeton subject headings:
American Astronomical Society--Directories--Periodicals.
Astronomers--Canada--Directories.
Astronomers--Directories.
Astronomers--Mexico--Directories.
Astronomers--United States--Directories.
Astrophysicists--Directories.