Dr. Roger Carolin, . (2002). Encyclopedia of Discovery Nature. [s.l]: A Dorling Kindersley Book.
Dr. Roger Carolin, . 2002. Encyclopedia of Discovery Nature. [s.l]: A Dorling Kindersley Book.
Dr. Roger Carolin, . Encyclopedia of Discovery Nature. [s.l]: A Dorling Kindersley Book. 2002.
