“Alternate Methods in Solarimetry . . .” Thekaekara, Solarimetry Workshop, Brazil, 1976

“Alternate Methods in Solarimetry . . .” Thekaekara, Solarimetry Workshop, Brazil, 1976, Box: 67, Folder: F241. Karl Wolfgang Böer papers, MSS 0483. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/90574 Accessed September 16, 2024.