Columbia subject headings:
Armenian question.
Baku (Azerbaijan)
Batumi (Georgia)
Petroleum industry and trade--Azerbaijan--Baku.
Harvard subject headings:
Armenian question.
Baku (Azerbaijan)
Batumi (Georgia)
Petroleum industry and trade--Azerbaijan--Baku.
Princeton subject headings:
Armenian question.
Baku (Azerbaijan)
Batumi (Georgia)
Petroleum industry and trade--Azerbaijan--Baku.