The plant genus Polygala in the Galápagos Islands
By: by John Thomas Howell and Duncan M. Porter.
Contributors: Porter, Duncan M., joint author.; Hanna, G Dallas, 1887-1970.
Series: Proceedings of the California Academy of Sciences, 4th series, v. 32, no. 19; Proceedings of the California Academy of Sciences ;; v. 32, no. 19.
Published: 1968
Place of publication: [San Francisco]
Language: eng
Number of pages: 586
Subjects: Polygala.; Botany -- Galápagos Islands.
Notes: Caption title.
"G Dallas Hanna anniversary volume."