Revision history of "Nov 29 1978"

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• (cur) (last) 03:01, 1 February 2010 RobertG (Talk | contribs) (4,022 bytes) (New page: HEAO 2 continued to operate satisfactorily in its third wk in orbit, and plans were to rotate a new instrument into the focal plane of the observatory's x-ray telescope within several ...)

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