White throated swift observations at El Morro 1952-1957
Swancara F. 1957. To: Hargrave LL. Re: White throated swift observations at El Morro 1952-1957
Arrival dates of the swifts
- Type
- Administrative
- Authors
- Swancara, Frank
- Date of Issue
- 1957-07-13
- Units
- ELMO
- Keywords
- Letter, swifts El Morro N.M.