Pursuant to that request, in late 1999 the Centre for International Crime Prevention of the Office for Drug Control and Crime Prevention of the Secretariat sent two questionnaires concerning the above instruments to Member States.
根据这一请求，1999年底秘书处药物管制和预防犯罪厅国际预防犯罪中心向会员国发送了两份关于上述文书的调查表。