Chronology and characteristics of a douglas-fir beetle outbraeck in Northern Idaho / 
M.M. Furniss...[et al.] 
 - Washington, D.C. :  United States Government Printing Office ,  1979 
 - 19 p. ;  27 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Beetles<br/>Dytiscidae
<br/><br/><label>Dewey Class. No.: </label>595.76