Columbia subject headings:
Harvard subject headings:
Geology, Stratigraphic--Precambrian--Congresses
Orogeny--Congresses.
Orogeny--France--Armorican Massif--Congresses.
Princeton subject headings:
Geology, Stratigraphic--Proterozoic--Congresses.
Metamorphic rocks--Congresses.
Orogeny--Congresses.
Rock deformation--Congresses.