Operational military satellites in orbit on 31 December 1989. Appendix 3B
Pike, John
Operational military satellites in orbit on 31 December 1989. Appendix 3B chapter - Oxford, OUP 1990 ( SIPRI yearbook 1990 : world armaments and disarmament , pp. 101-106 )
satellites--military technology--statistics
Operational military satellites in orbit on 31 December 1989. Appendix 3B chapter - Oxford, OUP 1990 ( SIPRI yearbook 1990 : world armaments and disarmament , pp. 101-106 )
satellites--military technology--statistics