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The Influence of Topography on the Formation of Temporary Bright Patches on Mars
EFFECT OF DIURNAL FREEZE-THAWING ON SURVIVAL AND GROWTH OF SELECTED BACTERIA
Some considerations for manned Mars entry and landing.
Decontamination standards for Martian exploration programs
The Solar System Exploration Program
A study of manned mars exploration in the unfavorable time period /1975-1985/
Some requirements on lifting vehicles for manned Mars operations.
Nasa to begin unmanned mars exploration this year /a fact sheet/ news release no. 64-205
Manned mars exploration in the unfavorable time period /1975-1985/