Boyd, Orau and Ralph Donaldson <br/><br/>
Tinely information on spraying and dustin of potatoes 

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 - USA    1932 
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 - Special Circ. Exten.Serv.Mass. St.Coll.   N° 13 .
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label>--Entomologia Aplicada--Plagas--Papas--<br/>Zoologia