Retzlaff, John A. <br/><br/>
Lens implant power calculation :  a manual for opthalmologists and biometrists / 
(by) John A. Retzlaff, Donald R. Sanders , Manus Kraff 
 - 3rd ed. 
 - New Jersey  :  SLACK Inc,  1990. 
 - 58 p.  :  ill.  ;  28 cm. 
<br/><br/><label>ISBN: </label>1556421869 
<br/><br/><label>LCCN: </label>90-053345 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lenses, Intraocular--instrumentation.
<br/><br/><label>National Library of Medicine Call No.: </label>WW263  / .R441m 1990 9