EVALUATION OF UPWARD CONTINUATION AND REDUCTION TOEVALUATION OF UPWARD CONTINUATION AND REDUCTION TO MAGNETIC EQUATOR ON AIRBORNE MAGNETIC DATA MAGNETIC EQUATOR ON AIRBORNE MAGNETIC DATA. FJS [Internet]. 2023 Nov. 7 [cited 2025 Sep. 2];7(5):192-7. Available from: https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1968