Columbia subject headings:
Quantum gravity--Congresses.
String models--Congresses.
Harvard subject headings:
Gauge fields (Physics)--Congresses.
Quantum gravity--Congresses.
String models--Congresses.
Symmetry (Physics)--Congresses.
Princeton subject headings:
Gauge fields (Physics)--Congresses.
Quantum gravity--Congresses.
String models--Congresses.