Columbia subject headings:
Petrology--Congresses.
Petrology--Pacific Area--Congresses.
Siliceous rocks--Congresses.
Siliceous rocks--Pacific Area--Congresses.
Tethys (Paleogeography)--Congresses.
Harvard subject headings:
Petrology--Congresses
Petrology--Pacific Area--Congresses.
Siliceous rocks--Congresses.
Siliceous rocks--Pacific Area--Congresses.
Tethys (Paleogeography)--Congresses.
Princeton subject headings:
Petrology--Congresses.
Petrology--Pacific Area--Congresses.
Siliceous rocks--Congresses.
Siliceous rocks--Pacific Area--Congresses.
Tethys (Paleogeography)--Congresses.