« Previous
Next »
Author/Creator
- Society of Photo-optical Instrumentation Engineers41
- SPIE Digital Library38
- United States. National Aeronautics and Space Administration36
- United States. Congress. House33
- Society of Photo-Optical Instrumentation Engineers27
- American Astronomical Society24
- United States. Naval Observatory24
- Adam Matthew Digital (Firm), digitiser21
- European Southern Observatory14
- Dick, Thomas, 1774-185711
- International Commission for Optics10
- Smithsonian Institution. Board of Regents10
- Webster, Geo. P. (George P.)10
- SPIE (Society)9
- George C. Marshall Space Flight Center8
- DFM Engineering7
- Kitchiner, William, 1775?-18277
- Lewis, Hilton7
- Stepp, Larry M.7
- United States7