Baker, Arthur Challen <br/><br/>
A further contribution to the study of eriosoma pyricola, the woolly pear aphis  / 
A. C. Baker and W. M. Davidson 
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<br/><br/> Sobretiro de: Journal of Agricultural Research 10 (2): 65-74,1917. Encuadernado con: Rosy apple aphis / by A. C. Baker 70-32 
<br/><br/><label>LCCN: </label>201143 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Afididos -- Colecciones de escritos  Eriosoma pyricola  Pera -- plagas
<br/><br/><label>Dewey Class. No.: </label>PA-C 595.752 B44