Columbia subject headings:
Harvard subject headings:
Merchant marine--Japan--Management.
Merchant marine--Japan--Technological innovations.
Shipbuilding--Japan--Management.
Shipbuilding--Japan--Technological innovations.
Princeton subject headings:
Merchant marine--Japan--Management.
Merchant marine--Japan--Technological innovations.
Shipbuilding--Japan--Management.
Shipbuilding--Japan--Technological innovations.