| Author: | Grinnell, Joseph, 1877-1939 |
| Subject: | QL, Chickadees, Birds -- California |
| Format: | From: University of California Publications in Zoology, Vol. 17, No. 17, Text |
| Date issued: | 2010 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | The Subspecies of the Mountain Chickadee [electronic resource] / Joseph Grinnell |