Conn, H.W. <br/><br/>
Bacteriology  A study of microorganisms and their relation to human welfare. 
by H.W. Conn, H.J. Conn. 
 - 4th. 
 - Baltimore  Wms & Wilkins  1929 
<br/><br/><label>Dewey Class. No.: </label>589.9  / N29