THE AUTHORS 



GENE D. AMMAN is Entomologist on the Population Dynamics of 

 Primary Bark Beetles research work unit in Ogden, since 

 joining the Intermountain Station in 1966. From 1958 to 1966 

 he was Entomologist with the Southeastern Forest Experiment 

 Station inAsheville , N.C. Dr. Amman received bothB.S. and 

 M.S. degrees in Zoology from Colorado State University, and 

 the Ph.D. in Forest Entomology from the University of Michi- 

 gan. He is author of numerous publications concerned with 

 ecology, dynamics, and control of mountain pine beetle and 

 balsam woolly aphid populations. 



LYNN A. RASMUSSEN is Biological Technician on the Population 

 Dynamics of Primary Bark Beetles research work unit in 

 Ogden. He earned the B.S. degree in Zoology from Utah State 

 University, Mr. Rasmussen had experience on several bark 

 beetle control projects before joining the Intermountain Sta- 

 tion in 1965. He has authored several publications concerned 

 with biology and behavior of the mountain pine beetle. 



