Sylven, Edvard <br/><br/>
Studies on fruit leaf tortricids (lepidoptera)  : with special reference to the periodicity of the adult moths 
by Edvard Sylven 
 - Stockholm  [S.l.]  1958 
 - 296 p.  il. n.  24 cm 
 - Statens Vaxtskyddsonstalt Meddlanden  11:74 .
 - Statens Vaxtskyddsonstalt Meddlanden .
<br/><br/><label>Subjects--Index Terms: </label>Insecta Lepidoptera Proteccion de las plantas