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McPherson, A.B. 1971. A new subspecies of the squirrel <i>Sciurus variegatoides</i> Ogilby from Costa Rica. Revista de Biología Tropical. 19, 1-2 (Dec. 1971), 191–194. DOI:https://doi.org/10.15517/rbt.v19i1-2.27526.