Ndubuisi KN, Chineke TC, Nwofor OK. Long-Term Variations of Visibility and Implications for Flight Operations at Some Nigeria’s Airports. NJP [Internet]. 2025 Sep. 22 [cited 2025 Oct. 9];34(2):186-93. Available from: https://njp.nipngr.org/index.php/njp/article/view/401