ABBREVIATIONS 6 Census Census of Population, Buildings and Dwellings CSO Czech Statistical Office CZ Czech Republic FIS Foreigner Information System MoI Ministry of the Interior PRIS Population Register Information System UN United Nations UNHCR United Nations High Commissioner for Refugees 1951 Convention 1951 Convention Relating to the Status of Refugees 1954 Convention 1954 Convention Relating to the Status of Stateless Persons 1961 Convention 1961 Convention on the Reduction of Statelessness Faces of Statelessness in the Czech Republic