Columbia subject headings:
Energy industries--Japan--Congresses.
Energy industries--United States--Congresses.
Petroleum industry and trade--Alaska--Congresses.
Petroleum industry and trade--Japan--Congresses.
Harvard subject headings:
Energy industries--Japan--Congresses.
Energy industries--United States--Congresses.
Petroleum industry and trade--Alaska--Congresses.
Petroleum industry and trade--Japan--Congresses.
Princeton subject headings:
Energy industries--Japan--Congresses.
Energy industries--United States--Congresses.
Petroleum industry and trade--Alaska--Congresses.
Petroleum industry and trade--Japan--Congresses.