USA-229 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "USA-229" in English language version.

refsWebsite

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planet4589.org

McDowell, Jonathan. "Issue 640". Jonathan's Space Report. Retrieved 24 April 2011.

Molczan, Ted (24 April 2011). "NROL-34: NOSS 3-5 elements". SatObs.
Ted, Molczan (17 April 2011). "NROL-34 - NOSS 3-5 pair spotted tonight from Austin, Texas". Satobs. Retrieved 24 April 2011.

Ray, Justin. "Mission Status Center". Spaceflight Now. Retrieved 24 April 2011.
Ray, Justin (18 April 2011). "Observers confirm identity of last week's Atlas payload". Spaceflight Now. Retrieved 24 April 2011.