Expedition of the California Academy of Sciences to the Galapagos Islands, 1905-1906 : II. A Botanical Survey of the Galapagos Islands /
Alban Stewart.
- San Francisco, California, USA : California Academy of Sciences, 1911.
- 7-288 p. ; il. ; 25 cm.
- Proceedings of the California Academy of Sciences: Fourth Series ; vol. 1 .