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  1. 1
    TWERLE Status Report - February 1972

    TWERLE Status Report - February 1972

    Published 1972-02
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  2. 2
    TWERLE Status Report for period ending 28 February 1974

    TWERLE Status Report for period ending 28 February 1974

    Published 1974-02
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  3. 3
    TWERLE balloon systems in Northern Hemisphere

    TWERLE balloon systems in Northern Hemisphere by John W. Firor

    Published 1975-08-14
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  4. 4
    TWERLE Status Report for period ending 30 September 1971

    TWERLE Status Report for period ending 30 September 1971

    Published 1971-09
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  5. 5
    TWERLE Status Report - November 1971

    TWERLE Status Report - November 1971

    Published 1971-11
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  6. 6
    TWERLE Status Report - December 1971

    TWERLE Status Report - December 1971

    Published 1971-12
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  7. 7
    TWERLE Status Report - January 1972

    TWERLE Status Report - January 1972

    Published 1972-01
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  8. 8
    TWERLE Status Report for period ending 31 March 1972

    TWERLE Status Report for period ending 31 March 1972

    Published 1972-03
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  9. 9
    TWERLE Status Report for period ending 30 April 1972

    TWERLE Status Report for period ending 30 April 1972

    Published 1972-04
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  10. 10
    TWERLE Status Report for period ending 15 July 1972

    TWERLE Status Report for period ending 15 July 1972

    Published 1972-07
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  11. 11
    TWERLE Status Report for period ending 21 June 1972

    TWERLE Status Report for period ending 21 June 1972

    Published 1972-06
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  12. 12
    TWERLE Status Report for period ending 31 August 1972

    TWERLE Status Report for period ending 31 August 1972

    Published 1972-08
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  13. 13
    TWERLE revised status report on TWERLE transmitter

    TWERLE revised status report on TWERLE transmitter

    Published 1972-10-10
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  14. 14
    TWERLE Status Report for period ending 30 November 1972

    TWERLE Status Report for period ending 30 November 1972

    Published 1972-11
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  15. 15
    TWERLE Status Report for period ending 30 December 1972

    TWERLE Status Report for period ending 30 December 1972

    Published 1972-12
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  16. 16
    TWERLE Status Report for period ending 31 January 1973

    TWERLE Status Report for period ending 31 January 1973

    Published 1973-01
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  17. 17
    TWERLE Status Report for period ending 28 February 1973

    TWERLE Status Report for period ending 28 February 1973

    Published 1973-02
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  18. 18
    TWERLE Status Report for period ending 31 March 1973

    TWERLE Status Report for period ending 31 March 1973

    Published 1973-03
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  19. 19
    TWERLE Status Report for period ending 30 April 1973

    TWERLE Status Report for period ending 30 April 1973

    Published 1973-04
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  20. 20
    TWERLE Status Report for period ending 15 August 1973

    TWERLE Status Report for period ending 15 August 1973

    Published 1973-08
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