The Blue-Gray Gnatcather in Philadelphia County, Pa.
| Image |  |
|---|---|
| Description | scholarly article published in The Auk, April 1907 |
| Author/s |
author: Richard F. Miller |
| Publication date | April 1907 |
| Language | |
| Country of origin | |
| Wikipedia link | |
| Copyright status | |
| Missing/wrong data? | Edit Wikidata item |