Sommer, Alfred. <br/><br/>
Field guide to the detection and control of xerophthalmia / 
Alfred Sommer. 
 - 47 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>924154127X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lacrimal apparatus.