“Availability of Direct, Total, and Diffuse Solar Radiation to Fix and Tracking Collectors in the USA,” Sandia, 1977

“Availability of Direct, Total, and Diffuse Solar Radiation to Fix and Tracking Collectors in the USA,” Sandia, 1977, Box: 67, Folder: F244. Karl Wolfgang Böer papers, MSS 0483. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/90577 Accessed September 11, 2024.