Columbia subject headings:
Hitachi Seisakujo.
Japan--Pictorial works.
Harvard subject headings:
Documentary photography--20th century--Pictorial works.
Hitachi Seisakujo
Japan--Pictorial works.
Smith, W. Eugene, 1918-1978
Princeton subject headings:
Hitachi Kenki Kabushiki Kaisha--Pictorial works.
Japan--Pictorial works.