Rose Chaffin, William Edwin. <br/><br/>
The biology and ecology of Dendroctonus valens Lex.; and the biology, ecology and control of Dendroctonus frontalis (=Mexicanus) Zim In Central Mexico 

 - (s.l.) :  The Author,  1966 
 - 243 h.  : ilus. 
<br/><br/> Thesis (Doctor of Philosophy) -- University of Massachusetts. Graduate School. 
<br/><br/><label>LCCN: </label>52782 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dendroctonus frontalis.<br/>Dendroctonus valens.