Boyd, William. <br/><br/>
Introduction to the study of disease / 
William Boyd and Huntigton Sheldon. 
 - 8th ed. 
 - Philadelphia :  Lea & Febiger,  1980. 
 - 660 p. ;  27 cm. 
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0812107292 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Panthology.