Apple scab (Diapositiva) 

 - Ithaca :  Cornell University,  (s.a.) 
 - 6 diapositivas col. 2 x 2 plg. 
 - Plant disease profiles ser. 1  ; 11 .
 - Plant disease profiles ser. 1  ; 11 .
<br/><br/> Tambien en CD 4 3/4 plgs. 
<br/><br/><label>LCCN: </label>19344 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Manzana--Enfermedades.<br/>Venturia inaequalis.