Average monthly abundance by species of birds on the Bear River Refuge
Publisher: U.S. Government Printing Office
Published: 1979
Place of publication: [Washington, D.C.]
Language: eng
Subjects: Bird watching
Description: Document consists of graphs with captions, no other text is included.  Graphs cover one year and are relative to a particular species of bird and the numbers of nestings over the year studied.
Notes: "U.S. Government Printing Office: 1979-0-678-609/316".