Ghai, Ashwani Kumar <br/><br/>
Refraction, dispensing optics and ophthalmic procedures 

 - Jaypee-Highlights  New Delhi  2013 
 - xvi,158 
<br/><br/>
<br/><br/><br/>E 
<br/><br/><label>Universal Decimal Class. No.: </label>535.324/Gha