Bibliografía (11 obras)
Preliminary Amphibian and Reptile Survey of the Helena National Forest : 1995 : a Report to USDA Forest Service
2018
Annotated bibliography of bog lemmings
2003
Amphibian, reptile and northern bog lemming survey on the Rocky Mountain Front
1997
Literature review and summary of research priorities for Harlequin duck
1996
Northern bog lemming survey, 1995
Preliminary colonial nesting bird survey on the Bureau of Land Management
Preliminary amphibian and reptile survey of the Sioux District of the Custer National Forest
1995
Swan Valley northern bog lemming survey
1994
Harlequin duck surveys in western Montana
1993
Northern bog lemming survey, 1992
Sensitive animal species in the Elkhorn and Big Belt Mountains of the Helena National Forest
1992
