Krotulski, Alex J., <br/><br/>
Monitoring changes in the novel psychoactive substance (NPS) market through enhanced identification of emerging drugs and their metabolites in biological samples / 
Alex J. Krotulski [and three others]. 
 - 1 online resource ([18] pages) :  color illustrations 
<br/><br/> "Document number: 251787"--Grant transmittal document.  "Date received: June 2018"--Grant transmittal document.  CRDP Program record. 
<br/><br/>Includes bibliographical references (page [12]). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychotropic drugs--United States.<br/>Drug abuse--United States.<br/>Drug testing--United States.
<br/><br/><label>GPO Item No.: </label>0718-A (online) 
<br/><br/><label>Gov. Doc. Class. No.: </label>J 28.2:P 95