O'Keefe, John D.Ahrens, T. J. (1992) Planetary cratering mechanics[Washington, DC : National Aeronautics and Space Administration ;MLA Citation
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Planetary cratering mechanics [microform] /
John D. O'Keefe and Thomas J. Ahrens.
|Main Author:||O'Keefe, John D.|
|Other Names:||Ahrens, T. J.|
|Published:||[Washington, DC : National Aeronautics and Space Administration ; 1992]|
NASA contractor report ; NASA CR-199053