Analysis of information sources in references of the Wikipedia article "Colonization of Mars" in English language version.
would have to throw a bunch of stuff before you start putting people there. ... It is a transportation system between Earth and Mars.
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: CS1 maint: numeric names: authors list (link)would have to throw a bunch of stuff before you start putting people there. ... It is a transportation system between Earth and Mars.
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: CS1 maint: numeric names: authors list (link)