Gifford E.W.

GIFFORD, E.W. 1913
The birds of the Galapagos Islands, with observations on the of Cocos and Clipperton Islands.
(Proc. of the California Acad. of Sci., S.4, Vol.
II.pp. 132, 7 pl.
San Francisco, 1913.
GIFFORD, E.W. 1919
Field notes on the Land-birds of the Galapagos Island.
(Proc. Calif. Acad. Sci., (4) 2 pt. pp.. 189-258).
San Francisco, Cal., 1979.
GIFFORD, E.W. 1953.
Re Archaeology of the Galapagos Islands.
(American Antiquity, T. 19, N. 2, p. 171)
Salt Lake City, 1953.