http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Trends and factors of fertility in Finland
FOUGSTEDT, Gunnar: -- Trends and factors of fertility in Finland. -- Helsinki:Soc.scient.Fennica 1977. 138 S. -- m.Fig.u.Tab. 8° -- (Commentationes scientiarum socialium.7.) -- 1978! -- Ts.