Columbia subject headings:
Coal miners--Japan--Fukuoka-ken--History--20th century--Pictorial works.
Photobooks.
Harvard subject headings:
Coal miners--Japan--Fukuoka-ken--Pictorial works.
Coal mines and mining--Japan--Fukuoka-ken--Pictorial works.
Princeton subject headings:
Copper miners--Japan--Fukuoka-ken--History--Pictorial works.