Heiland, C. A. (Carl August), 1899-Pugh, William E.2022-05-102022-05-101932https://hdl.handle.net/11124/13027Includes bibliographical references.masters thesesengCopyright of the original work is retained by the author.Geomagnetism -- Diurnal variationsMagnetic declination -- North AmericaElectromagnetic fieldsGravity anomaliesTemperature compensation on a new magnetic system for Schmidt vertical balancesText