Cairns, Stephen D. A revision of the ahermatypic scleractinia of the Galapagos and Cocos Islands / Stephen D. Cairns. - Washington : Smithsonian Institution Press, 1991. - 32 p. ; 28 cm. - Smithsonian contributions to zoology ; no. 504 . Subjects--Topical Terms: Scleractinia--Classification.--Galapagos IslandsScleractinia--Classification.--Cocos (Keeling) IslandsScleractinia--Geographic distribution.--Galapagos Islands