P.D. Skaar's Montana bird distribution
By: revised by Dwight Bergeron ... [et al.].
Contributors: Bergeron, Dwight.; Skaar, Palmer David.
Edition: 4th ed.
Series: Special publication (Montana Natural Heritage Program) -- no. 2
Publisher: Montana Natural Heritage Program
Published: 1992
Place of publication: Helena
Language: eng
Number of pages: 118
Subjects: Birds -- Montana.
Other titles: Montana bird distribution