The Planck, Max 1858-1947 creator Masius, Morton 1883- text utu 2012 monographic en 1 online resource : multiple file formats Release date is 2012-06-18 Original publication data not identified Electric waves Heat -- Radiation and absorption Gases QC Original publication data not identified 14008862 https://www.gutenberg.org/ebooks/40030 https://www.gutenberg.org/ebooks/40030 UtSlPG 260607 20260610133921.0 40030