Columbia subject headings:
Ethnology--Finland.
Finland--Economic conditions--Case studies.
Finland--Social conditions--1945---Case studies.
Harvard subject headings:
Ethnology--Finland
Finland--Economic conditions--Case studies.
Finland--Social conditions--1945---Case studies.
Ruukki (Oulun lääni, Finland)--Economic conditions.
Ruukki (Oulun lääni, Finland)--History.
Ruukki (Oulun lääni, Finland)--Social conditions.
Princeton subject headings:
Ethnology--Finland.
Finland--Economic conditions--Case studies.
Finland--Social conditions--1945---Case studies.