Ryer, Elmer Le Roy,  1880- <br/><br/>
Ophthalmometry :  a practical text-book for the practitioner and advanced student in optometry / 
By E. Le Roy Ryer. 
 - New York :  The Optical Publishing Co.,  c1925. 
 - xxiv, 220 p. :  ill. ;  20 cm. 
<br/><br/><label>LCCN: </label>25010212  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Eye--Examination.
<br/><br/><label>LC Class. No.: </label>RE89.O6  / RYE 1945