USDA FOREST SERVICE 

 RESEARCH PAPER INT-71 

 1970 



THE MOUNTAIN PINE BEETLE 

 IN LODGEPOLE PINE FORESTS 



ARTHUR L ROE AND GENE D. AfAtAAN 



U. S. DEFT. OF AGiliCULTURE 

 'NATIONAL ASniCULTURAL LIBRART 



JUL 2 1970 



CURREIiT SEr.lAL RECORDS 



