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Ballard, W. B., L. A. Ayres, C. L. Gardner, and J. W. Foster.  1991.  Den site 
     activity Patterns of gray wolves, Canis lupus, in southcentral 
     Alaska.  Canadian Field Naturalist 105: 497-504. 

Carbyn, L. N.  1974.  Wolf predation and behavioral interactions with elk and
     other ungulates in an area of high prey diversity.  Ph.D. Thesis, 
     University of Toronto, Toronto, Ontario. 233 pages.

Mech, L. D.  1970.  The Wolf:  the ecology and behavior of an endangered 
     Species.  Natural History Press.  Doubleday Publishing Co., New York.  
     384 pages.

Mech, L. D.  1988.  The Arctic wolf:  living with the pack.  Voyageur Press, 
     Stillwater, Minnesota.  128 pages.

Mech, L. D.  1993.  Resistance of young wolf pups to inclement weather.  
     Journal of Mammalogy 74: 485-486.

Mech, L. D.  1994.  Regular and homeward travel speeds of arctic wolves.  
     Journal of Mammalogy 75: 741-742.

Mech, L. D.  1995.  A ten-year history of the demography and productivity 
     of an arctic wolf pack.  Arctic 48(4): 329-332.

Mech, L. D., and J. M. Packard.  1990.  Possible use of Wolf (Canis lupus) 
     den over several centuries.  Canadian Field-Naturalist 104: 484-485.

Murie, A.  1944.  The wolves of Mt. McKinley.  United States Government 
     Printing Office, Washington, D.C.  United States National Park 
     Series Number 5. 238 pages.

Packard, J. M., L. D. Mech, and R. R. Ream.  1992.  Weaning in an arctic 
     wolf pack:  behavioral mechanisms.  Canadian Journal of Zoology 70: 
     1269-1275.