International agreement could preserve important sites.
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References
CockellC. & HorneckG.Space Policy, 20. 291 - 295 (2004).
SpennemannD. H. R. Space Policy, 20. 297 - 290 (2004).
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Peplow, M. Scientists propose conservation parks on Mars. Nature (2004). https://doi.org/10.1038/news041122-15
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DOI: https://doi.org/10.1038/news041122-15