Kirchhoff, G. (Gustav), 1824-1887.
Ueber die Fraunhoferschen [manuscript], 1859.
Manuscript reporting on pioneer researches in spectrum analysis.
Spectrum analysis -- Research -- 19th century.
AIP-ICOS
Franklin Institute. The Historical and Interpretative Collections of The Franklin Institute. Archives and Curatorial Department. 222 N. 20th St., Philadelphia, PA 91903-1194, USA