Hays, Patrick A <br/><br/>
Proton nuclear magnetic resonance spectroscopy (NMR) methods for determining the purity of reference drug standards and illicit forensic drug seizures.  [electronic resource] 

 -  Journal of forensic sciences  Nov 2005 
 - 1342-60 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0022-1198