Martifgnoni, Mauyro E. <br/><br/>
Peroral bioassay of nucleopolyhedrosis viruses in larvare of the western spruce budworm / 
Mauyro E. Martifgnoni and Paul J. Iwal 
 - Oregon :  Forest Service ,  1981 
 - 20 p. :  ill. ;  27 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Spruce--Spacing<br/>Forest insects
<br/><br/><label>Dewey Class. No.: </label>634.9752678