Boyd, Mark F.  1889-1968. <br/><br/>
Preventive medicine, 
by Mark F. Boyd. 
 - 7th ed., rev. 
 - Philadelphia,  London,  W.B. Saunders,  c1945. 
 - x, 591 p.  illus. (part col.), maps, forms,  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 560-566. 
<br/><br/><label>LCCN: </label>sg 45000196  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hygiene.<br/>Medicine, Preventive.
<br/><br/><label>LC Class. No.: </label>RA425  / .B73 1945