Sixth United Nations Congress Prevention of Crime and Treatment of Offenders, Caracas/Venezuela, 25 August to 5 Sept. 1980, and proceedings of the first Asian/Pacific Conference of Correctional Administrators / Index (Sixth United Nations Congress Prevention of Crime and Treatment of Offenders, Caracas/Venezuela, 25 August to 5 Sept. 1980, and proceedings of the first Asian/Pacific Conference of Correctional Administrators)