Columbia subject headings:
Astrophysics--Congresses.
Particles (Nuclear physics)--Congresses.
String models--Congresses.
Superstring theories--Congresses.
Harvard subject headings:
Astrophysics--Congresses
Particles (Nuclear physics)--Congresses
String models--Congresses.
Superstring theories--Congresses
Princeton subject headings:
Astrophysics--Congresses.
Particles (Nuclear physics)--Congresses.
String models--Congresses.
Superstring theories--Congresses.