E/CN.4/1995/31/Add.4 page 13 Elimination of the practice of administrative detention; The 1992 Amnesty for officers of the former regime; The ratification of the following international human rights instruments: (i) (ii) (iii) (iv) (v) The International Covenant on Economic, Social and Cultural Rights (date of accession: 24 September 1992); The International Covenant on Civil and Political Rights (date of accession: 24 September 1992); The International Convention on the Elimination of All Forms of Racial Discrimination (date of accession: 9 June 1992); The Convention on the Elimination of All Forms of Discrimination against Women (date of signature: 29 July 1980; date of ratification: 17 February 1992); Convention on the Prevention and Punishment of the Crime of Genocide (date of accession: 9 June 1991); (vi) International Convention on the Suppression and Punishment of the Crime of Apartheid (date of accession: 9 June 1991); (vii) Convention on the Non-applicability of Statutory Limitations to War Crimes and Crimes against Humanity (date of accession: 6 May 1983); (viii) Convention on the Rights of the Child (date of signature: 26 January 1990; date of ratification: 1 March 1990); Recognition of the precedence of treaties over domestic law. B. 1. (a) Improvements to be made Status of prison establishments Status of re-education and rehabilitation labour camps 43. Because of the inherent restrictions and prohibitions, insufficient transparency is a characteristic of these camps. For example, it is difficult, if not impossible, to obtain the following basic information: General list of camps, prisons and temporary detention centres; General statistics on detainees; Number of prisoners in each establishment visited; Presence or otherwise of persons sentenced for offences against national security and, where applicable, their number.