Discussion 

 - The Hague :  International Society for Horticultural Science,  1976 
 - 75 p 
 - Acta Horticulturae  ; 45 .
 - Acta Horticulturae  ; 45 .
<br/><br/><label>LCCN: </label>33740 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mancha amarga.<br/>Manzana--Enfermedades.
<br/><br/><label>Dewey Class. No.: </label>634.11  / M4 1974