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Displaying 1-2 of 2 results for author "Berthelot, Yves Henri."
Sound propagation over uneven ground and irregular topography [microform] : semiannual status report no. 5 / by Yves H. Berthelot ... [et al.].
- Text
- [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1987]
- 1988
Sound propagation over uneven ground and irregular topography [microform] : semiannual status report no. 4 / by Yves H. Berthelot ... [et al.].
- Text
- [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1987]
- 1987
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