A Symposium held at the Harward School of Public Health June 12 - June 17, 1939 <br/><br/>
Virus and rickettsial diseases with especial consideration of their public health significance  Harward School of Public Health. 

 - Cambridge  Harward University Press  1948 
 - xi, 907p. 24cm. 
<br/><br/><label>Dewey Class. No.: </label>616.922  / S99P