Heiland, C. A. (Carl August), 1899-Van Tuyl, Francis Maurice, 1887-1975Somers, George B.2023-03-222023-03-221930https://hdl.handle.net/11124/16915Includes bibliographical references.doctoral dissertationsengCopyright of the original work is retained by the author.Magnetic anomalies -- North AmericaGeomagnetism -- North AmericaElectromagnetic fieldsMagnetic declination -- North AmericaEarth (Planet) -- Internal structureCorrelation of the anomalies of vertical intensity of the Earths magnetic field with the regional geology of North AmericaText