Vorlage:REG06
Aus WORLDFISH WIKI
- Regan, C.T. 1906. A revision of the South-American cichlid genera Retroculus, Geophagus, Heterogramma, and Biotoecus. Annals and Magazine of Natural History, (Series 7) 17 (#97) (art. 6): 49-66. (BHL)
