NASA NTRS · 19680030870
Automated /unmanned/ Mars sample return missions.
Abstract
Payload feasibility of automated /unmanned/ Martian surface sample collection and return to earth
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Dockery, J. T., Niehoff, J. C., Roberts, D. L.. 1967-11-01. Automated /unmanned/ Mars sample return missions.. https://ntrs.nasa.gov/citations/19680030870
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