Columbia subject headings:
Cave paintings--Yemen (Republic)--Socotra--Catalogs.
Caves--Yemen (Republic)--Socotra.
Indian Ocean--Antiquities.
Inscriptions, Brahmi--Yemen (Republic)--Socotra.
Inscriptions, Indic--Yemen (Republic)--Socotra.
Inscriptions--Yemen (Republic)--Socotra--Catalogs.
Karst--Yemen (Republic)--Socotra.
Mural painting and decoration, Indic--Yemen (Republic)--Socotra.
Socotra (Yemen)--Antiquities.
Speleology--Yemen (Republic)--Socotra.
Harvard subject headings:
Cave paintings--Yemen (Republic)--Socotra--Catalogs.
Caves--Yemen (Republic)--Socotra.
Indian Ocean--Antiquities.
Inscriptions, Brahmi--Yemen (Republic)--Socotra.
Inscriptions, Indic--Yemen (Republic)--Socotra.
Inscriptions--Yemen (Republic)--Socotra--Catalogs.
Karst--Yemen (Republic)--Socotra.
Mural painting and decoration, Indic--Yemen (Republic)--Socotra.
Socotra (Yemen)--Antiquities.
Speleology--Yemen (Republic)--Socotra.
Princeton subject headings: