Porter, D.  R <br/><br/>
Relation of virus diseases to potato production in California  / 
D. R. Porter 
 - Berkeley, Cal.  :   Agricultural Experiment Station 
 - 32 p. 
 - California. Agric. Exp. Sta. Bull.; 587 .
<br/><br/><label>LCCN: </label>202322 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Papa -- Enfermedades por virus  Papa -- Rendimiento