www.stat.fi/til/tyti/2012/14/tyti_2012_14_2013-11-05_kat_005_en.html
... 1 Socio-economic Groups Classification of Socio-economic Groups 1989 Code Heading 3 Upper-level employees with administrative, managerial, professional and related occupations 31 Senior officials and upper ...
11/05/2013