1. Variations in Earth rotation Publication/Creation: Washington, DC : International Union of Geodesy and Geophysics : American Geophysical Union, 1990 Resource Type: Book Access & Availability: Loading
2. Viaje al centro de la tierra de Julio Verne : texto completo Author/Creator: Verne, Jules, 1828-1905, author Publication/Creation: Bogotá, Colombia : Editorial La Oveja Negra Ltda., [2020] Resource Type: Book Access & Availability: Loading