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    Helicopter noise measurements data report

    Helicopter models: Hughes 300-C, Hughes 500-C, Bell 47-G, Bell 206-L / Harold C. True and Richard M. Letty
    True, Harold C. / Letty, Richard M. | SLUB | 1977
    Contributors: True, Harold C. , Letty, Richard M.

    A model to calculate traffic noise levels from complex highway cross sections

    Tobutt, D. C. / Nelson, Paul M. | SLUB | 1990
    Contributors: Tobutt, D. C. , Nelson, Paul M.

    Ad astra - Hipparcos : the European Space Agency's astrometry mission; an introduction

    European Space Agency | SLUB | 1985
    Contributors: Perryman, M. A. C.