Richards, R <br/><br/>
Need for a comparative performance standard for dry powder inhalers.  [electronic resource] 

 -  Thorax  Nov 1993 
 - 1186-7 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0040-6376 
<br/><br/><label>Standard No.: </label>10.1136/thx.48.11.1186  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nebulizers and Vaporizers--standards<br/>Powders<br/>Pressure<br/>Reference Standards