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Johnson, M. R., D. K. Boyd, and D. H. Pletscher.  1994.  Serology of canine 
     parvovirus and canine distemper in relation to wolf (Canis lupus) pup 
     mortalities.  Journal of Wildlife Diseases 30:270-273.

Mech, L. D., and E. M. Gese.  1992.  Field testing the Wildlink Capture Collar 
     on wolves.  Wildlife Society Bulletin 20:249-256.

_____, and S. M. Goyal.  1995.  Effects of canine parvovirus on gray 
     wolves in Minnesota.  The Journal of Wildlife Management 59:565-570.

_____, _____, C. N. Bota, and U. S. Seal.  1986.  Canine parvovirus 
     infection in wolves (Canis lupus) from Minnesota.  Journal of Wildlife 
     Diseases 22:104-106.

Muneer, M. E., I. O. Farah, K. A. Pomeroy, S. M. Goyal, and L. D. Mech.  1988.  
     Detection of parvoviruses in wolf feces by electron microscopy.  Journal 
     of Wildlife Diseases 24:170-172.

Wydeven, A. P., R. N. Schultz, and R. P. Thiel.  1995.  Monitoring of a gray 
     wolf population in Wisconsin 1979-1991.  In Ecology and conservation 
     of wolves in a changing world, L. D. Carbyn, S. H. Fritts, and D. R. Seip, 
     (eds.). Canadian Circumpolar Institute, Edmonton, Alberta, Canada, pp. 147-
     156.

Zarnke, R. L., and W. B. Ballard.  1987.  Serologic survey for selected microbial 
     pathogens of wolves in Alaska.  Journal of Wildlife Diseases 23:77-85.