IMPROVING THE LOCAL GEOMETRIC GEOID MODEL OF FCT ABUJA ACCURACY BY FITTING A HIGHER ORDER/DEGREE POLYNOMIAL SURFACE. FUDMA JOURNAL OF SCIENCES, [S. l.], v. 4, n. 3, p. 114–120, 2020. DOI: 10.33003/fjs-2020-0403-276. Disponível em: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/276. Acesso em: 7 sep. 2025.