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Author/Creator
- SpringerLink (Online service)6
- Humboldt, Alexander von, 1769-18595
- SPIE Digital Library5
- American Astronomical Society3
- European Southern Observatory3
- Scheiner, J. (Julius), 1858-19133
- Smithsonian Astrophysical Observatory3
- Society of Photo-Optical Instrumentation Engineers3
- DFM Engineering2
- Habib, E. J. (Edmund J.)2
- Heidelberg (Germany) Landessternwarte2
- Heidelberg (Germany). Sternwarte. Astrophysikalisches institut2
- Kibrick, Robert I.2
- Lick Observatory2
- Ackermann, Jacob Fidelis1
- Alexander, W. M.1
- American Chemical Society. Division of Chemical Education, sponsoring body1
- American Chemical Society. Division of Geochemistry, sponsoring body1
- American Chemical Society. Division of Nuclear Chemistry and Technology, sponsoring body1
- American Chemical Society. Meeting (2007 : Chicago, Illinois)1