Mathur, A C  <br/><br/>
Face mask for use at high altitude  
/ Defence Materials & Stores Research & Development Establishment  
 - Kanpur:   Defence Materials & Stores Research & Development Establishment,   1991 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Defence materials 
<br/><br/><label>Subjects--Index Terms: </label>Stores research  
<br/><br/><label>Universal Decimal Class. No.: </label>T 614.891:355  / N1