Brown, R.C. <br/><br/>
The spruce budworm 

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 - Washington-USA    1944 
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 - Leaflet. U.S. Dept. Agric.   N° 242 .
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label>--Entomologia--Insecta--Plagas--<br/>Agricultura