Armstrong, G. M. <br/><br/>
Investigations on downy mildew of tobacco  / 
G. M. Armstrong and C. B. Summer 
 - Clemson, South Carolina  :   Clemson Agricultural College 
 - 23 p. 
 - South Carolina Agri. Exp. Sta. Bull.; 303 .
<br/><br/><label>LCCN: </label>201812 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tabaco -- Enfermedades  Moho azul del tabaco