TY - RPRT TI - Solar Energy Thermionic /SET/ program Final report, task 1 AU - Brosens, P. AU - Gunther, B. AU - Merra, S. AU - Pantazelos, P. G. PY - 1968 UR - https://ntrs.nasa.gov/citations/19680021935 ID - 19680021935 ER -