Useful Reference - Soviet Space NLC Observations Oct 9, 2011 11:09:50 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by mesospheric on Oct 9, 2011 11:09:50 GMT Came across this reference whilst reviewing the book, 'Russian Space Probes':www.scribd.com/fullscreen/68058374?access_key=key-d9ejg9quckmwbrwdh59