30 September 1994 | Publisher: UN Committee on Economic, Social and Cultural Rights (CESCR) | Document type: States Parties Reports
30 January 1994 | Publisher: United States Department of State | Document type: Annual Reports
24 November 1993 | Publisher: UN Committee on Economic, Social and Cultural Rights (CESCR) | Document type: States Parties Reports
20 November 1990 | Publisher: National Legislative Bodies / National Authorities | Document type: National Decrees, Circulars, Regulation, Policy Documents
3 August 1965 | Publisher: National Legislative Bodies / National Authorities | Document type: National Decrees, Circulars, Regulation, Policy Documents