MAKE A MEME View Large Image Abbot with Harmonic Print-out.jpg en Dr Charles G Abbot 1872-1973 astrophysicist and fifth Secretary of the Smithsonian Institution 1928-1944 seated in a chair holds a harmonic analyzer print-out of his solar observations 2012-04-11 http //...
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Keywords: Dr. Charles G. Abbot with Harmonic Print-out.jpg en Dr Charles G Abbot 1872-1973 astrophysicist and fifth Secretary of the Smithsonian Institution 1928-1944 seated in a chair holds a harmonic analyzer print-out of his solar observations 2012-04-11 http //siarchives si edu/collections/siris_sic_10490 author PD-USGov Uploaded with UploadWizard Charles Greeley Abbot Solar activity Differential analysers Harmonics Smithsonian Institution Archives
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