Spray calendar for apples  / 
Prepared by the Departments of Botany, Horticulture and Zoology 
 - Raleigh, North Carolina  :   Agricultural Extension Service 
 - 1 hoja desplegable 
 - North Carolina Extesion circular; 192 .
<br/><br/><label>LCCN: </label>202486 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Manzana -- Fumigación