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- Author(s):
- MacCallum, W. G. (William George), 1874-1944
- Publication:
- [Baltimore? : s.n., 1898?]
- Subject(s):
- Birds -- parasitology
- Author(s):
- MacCallum, W. G. (William George), 1874-1944, author
- Publication:
- [Baltimore, Md.?] : [publisher not identified], [1897?]
- Subject(s):
- Birds -- parasitology