Pedro de Medina
Pedro de Medina (1493 – Seville, 1567) was a Spanish cartographer and author of navigational texts. His well-known ''Arte de navegar'' ("The Art of Navigation", 1545) was the first work published in Spain dealing exclusively with navigational techniques (Martín Fernández de Enciso's ''Suma de Geographia'', 1519, which gave ample geographical information already contained solar declination tables with explanations and the corrections for finding the latitude by measuring the height of Polaris).
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