Measurement of Magnetic Intensity Using Three Different Sensor Levels and Three Vertical Gradient Determinations to Detect Subsurface Engineering Utilities. Iraqi National Journal of Earth Science (INJES), [S. l.], v. 26, n. 4, p. 257–262, 2026. DOI: 10.33899/injes.v26i4.60971. Disponível em: https://earth.uomosul.edu.iq/index.php/earth/article/view/60971. Acesso em: 30 sep. 2026.