Columbia subject headings:
Bulgarians--Scotland--Shetland--Drama.
Merchant mariners--Scotland--Shetland--Drama.
Shetland (Scotland)--Social life and customs--Drama.
Harvard subject headings:
Bulgarians--Scotland--Shetland--Drama.
Merchant mariners--Scotland--Shetland--Drama.
Shetland (Scotland)--Social life and customs--Drama.
Princeton subject headings:
Bulgarians--Scotland--Shetland--Drama.
Merchant mariners--Scotland--shetland--Drama.
Shetland (Scotland)--Social life and customs.