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    Future fuels and engines for railroad locomotives. Volume 1: Summary

    Liddle, S. G. / Bonzo, B. B. / Purohit, G. P. et al. | NTRS | 1981

    Survival of micro-organisms in space.

    Hallgren, D. S. / Hemenway, C. L. / Hotchin, J. et al. | NTRS | 1968

    Effects of prolonged bed rest

    Birkhead, N. C. / Blizzard, J. J. / Haupt, G. J. et al. | NTRS | 1964

    Preliminary Plans for a Close Encounter with 253 Mathilde

    Harch, A. P. / Murchie, S. L. / McAdams, J. V. et al. | NTRS | 1997