| Title: | Critical to United States security |
| Alternate title: | Critical to US security : the Gambit and Hexagon satellite reconnaissance systems compendium |
| Author: | Outzen, James D. |
| Author: | Center for the Study of National Reconnaissance (U.S.) |
| Note: | Center for the Study of National Reconnaissance, 2012 |
| Link: | page images at HathiTrust |
| No stable link: | This is an uncurated book entry from our extended bookshelves, readable online now but without a stable link here. You should not bookmark this page, but you can request that we add this book to our curated collection, which has stable links. |
| Subject: | Artificial satellites, American |
| Subject: | Artificial satellites, American -- History |
| Subject: | Astronautics, Military |
| Subject: | Astronautics, Military -- United States -- History |
| Subject: | History |
| Subject: | Military surveillance |
| Subject: | Military surveillance -- United States -- History |
| Subject: | Space surveillance |
| Subject: | Space surveillance -- United States -- History |
| Other copies: | Look for editions of this book at your library, or elsewhere. |
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