"Spectrum, Solar." . . . . "Photographie." . . "Talbotypie." . . "Sonnenspektrum." . . . . "On the chemical action of the rays of the solar spectrum on preparations of silver and other substances, both metallic and non-metallic and on some photographic processes"@en . . "Early works"@en . "On the chemical action of the rays of the solar spectrum on preparations of silver and other substances : both metallic and non-metallic, and on some photographic processes" . . . . . . . . "Anleitung" . . . "On the Chemical Action of the Rays of the Solar Spectrum on Preparations of Silver and other Substances" . . . "On the chemical action of the rays of the solar spectrum on preparations of silver and other substances both metallic and non-metallic, and on some photographic processes"@en . . . "On the chemical action of the rays of the solar spectrum on preparations of silver and other substances, both metallic and non-metallic, and on some photographic processes"@en . "On the chemical action of the rays of the solar spectrum on preparations of silver and other substances, both metallic and non-metallic, and on some photographic processes" . . . . . . . . . "Spektralanalyse." . . "Photographic chemistry." . .