Boyer. M.G. <br/><br/>
A leaf-spotting disease of Hybrid and native aspen 

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 - CAN    1962 
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 - Canadian Journal of Botany   v.40 .
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label>--Aspen--Fitopatologia--<br/>Botanica