Lens, Al <br/><br/>
Optics, retinoscopy and refractometry / 
Al Lens 
 - Thorofare NJ :  Slack Incorporated ,  1999 
 - 128 p. :  ill. ;  26 cm. 
 - The basic bookshelf for eyecare professionals .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>1556423977  RM138.69 
<br/><br/><label>LCCN: </label>98-050141 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Refractive errors--Diagnosis<br/>Optometry--methods.<br/>Optics.
<br/><br/><label>National Library of Medicine Call No.: </label>WW300