Internet, http://en.wikipedia.org/wiki/Paul_Kosok, 2012-03-14
Information trouvée : Paul August Kosok (b. 21 April 1896- d. 1959), an American professor in history and
government
Life, land, and water in ancient Peru : an account of the discovery, exploration,
and mapping of ancient pyramids, canals, roads, towns, walls, and fortresses of coastal
Peru with observations of various aspects of Peruvian life, both ancient and modern
/ Paul Kosok, 1965