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"Navegación Astronómica" by Luis Mederos, currently in its 8th edition (ISBN 978-84-18655-27-2), is a comprehensive Spanish-language guide tailored for maritime certifications. The text features updated content, color figures, and simplified methods for celestial positioning. For the official, verified edition, visit Ediciones Tutor
Guía Detallada de Navegación Astronómica por Luis Mederos
Referencias
The Celestial Sphere: Understanding the universe from the perspective of an observer on Earth.