About: http://webisa.webdatacommons.org/130280482

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	During and after 1968, the statistics were mainly derived from data generated by the special drug treatment centres.
http://www.w3.org/ns/prov#wasQuotedFrom	unodc.org