Space Policy · 2016 · 35 citations · 2 references
Natural SciencesAerospace EngineeringEarth SciencesTransportTransportationLunar GeologyCis-lunar TrajectoriesCislunar Resource InfrastructureCislunar Trajectory DesignCislunar TransfersLunar Traffic Management
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Ian Crawford · Progress in Physical Geography Earth and Environment · 2015 · 327 citations