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4. del Hoyo J, Collar N & Kirwan GM (2016) Hawaiian Petrel (Pterodroma sandwichensis). In: del Hoyo J, Elliott A, Sargatal J, Christie DA & de Juana E (eds) Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (online) http://www.hbw.com/node/467271, accessed 2016-4-7.
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