Popular initiative on immigration, 4 December 1988.
D003249:Constitution and Bylaws; D003710:Demography; D019049:Developed Countries; D004641:Emigration and Immigration; D005006:Ethnicity; D005060:Europe; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D013557:Switzerland
Constitution; Demographic Factors; Developed Countries; Europe; Foreigners; International Migration; Migration; Nationality; Population; Population Characteristics; Population Dynamics; Switzerland; Western Europe