Nationa Geographic Society National Geographic. [July 2010. V. 218, n. 1] / Dir. d' obra: Johns, Chris - V. 218, n. 1 edició. - Washington : National Geographic Society, 2010 - 0 En anglès Subjects--Topical Terms: GeografiaRevistes Index Terms--Genre/Form: Revistes -- Adults Universal Decimal Class. No.: R 91 Nat