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Cowan, I. M.  1947.  The timber wolf in the Rocky Mountain national parks of 
     Canada.  Canadian Journal Research 25:139-174. 
     
Gray, D. R.  1970.  The killing of a bull muskox by a single wolf.  Arctic 
     23:197-199. 
     
Gray, D. R.  1983.  Interactions between wolves and Muskoxen on Bathurst 
     island, Northwest Territories, Canada.  Acta Zoologica Fennica  
     174:255-257. 
     
Gray, D. R.  1987.  The Muskoxen of Polar Bear Pass.  National Museum of 
    Natural Sciences, National Museums of Canada.  Fitzhenry and Whiteside,
    Markham, Ontario.  191 pages. 
     
Mech, L. D.  1970.  The Wolf: The ecology and behavior of an endangered 
     species.  Doubleday Publishing Company, New York. 384 pages.
     
Mech, L. D.  1988.  The arctic wolf: Living with the pack.  Voyageur Press, 
     Stillwater, Minnesota.  128 pages.
	
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 48:329-332.
	
Mech, L. D., L. G. Adams, T. J. Meier, J. W. Burch, and B. W. Dale.  1998.  The
     wolves of Denali.  University of Minnesota Press, Minneapolis, Minnesota.  
     227 pages.

Murie, A.  1944.  The Wolves of Mount McKinley.  U.S. National Park Service
     Fauna Series Number 5.  U.S. Government Printing Office, Washington, D. C.
     238 pages.     

Schmidt, P. A., and L. D. Mech.  1997.  Wolf pack size and food acquisition.  
     American Naturalist 150:513-517.