National Geographic Society National Geographic. [June 2010. Vol. 217. N. 6] / Dir. d' obra: Johns, Chris - V. 217, n. 6 edició. - Washington : National Geographic Spciety, 2010 - 2010 - Yellow Border . En anglès Subjects--Topical Terms: Geografia ---- Revistes Index Terms--Genre/Form: Revistes -- Adults Universal Decimal Class. No.: R 91 Nat