Carfentanil :  a dangerous new factor in the U.S. opioid crisis. 

 - 1 online resource (1 unnumbered page) :  color illustration. 
 - Office safety alert .
<br/><br/> CRDP Program record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Synthetic drugs--United States.<br/>Fentanyl--United States.<br/>Opioid abuse--United States.<br/>Drug abuse--United States.
<br/><br/><label>GPO Item No.: </label>0967 (online) 
<br/><br/><label>Gov. Doc. Class. No.: </label>J 24.2:C 19