Popular lectures on scientific subjects Helmholtz, Hermann von, 1821-1894 creator Atkinson, Edmund, 1831-1901 contributor text book London Longmans, Green, and co 1895 1895 New ed.
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ENG First published in 1873. Science Q171 .H54 https://www.biodiversitylibrary.org/bibliography/24858 7023888 a12001088 10.5962/bhl.title.24858 Chicago. Univ. Library