<http://webisa.webdatacommons.org/230088293>	<http://www.w3.org/ns/prov#value>	"The present cost of its enforcement, and the individual and social harm caused by it, are in our opinion, one of the major problems involved in the nonmedical use of drugs. 58" .
<http://webisa.webdatacommons.org/230088293>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<druglibrary.org> .
<http://webisa.webdatacommons.org/230088293>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/435823803>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/230088293> .