Geomagnetic Secular Variation [Materials for paper written jointly with Subir Banerjee during SGB's visit to University of Minnesota in 1986.] -- NOTE: Includes letters from Leroy Alldredge, George Backus, Subir Banerjee, David R. Barraclough, F.H. Busse, T.G. Cowling, 1986-1987

Geomagnetic Secular Variation [Materials for paper written jointly with Subir Banerjee during SGB's visit to University of Minnesota in 1986.] -- NOTE: Includes letters from Leroy Alldredge, George Backus, Subir Banerjee, David R. Barraclough, F.H. Busse, T.G. Cowling, 1986-1987, 3.1.9, Box: 1, Folder: 9.0. Stephen G. Brush papers, 0294-UA. Special Collections and University Archives. https://archives.lib.umd.edu//repositories/2/archival_objects/286790 Accessed April 28, 2024.