BHARGAVA, B. N. Annual Wave in the world-wide F-Region Ionization. MAUSAM, [S. l.], v. 10, n. 1, p. 69–72, 1959. DOI: 10.54302/mausam.v10i1.4028. Disponível em: http://103.215.208.102/index.php/MAUSAM/article/view/4028. Acesso em: 23 nov. 2024.