NASA NTRS · 19710021186
Planetary quarantine program Quarterly progress report, period ending 30 Jun. 1971
Abstract
Problem of hardy soil spores in spacecraft sterilization of Planetary Quarantine Program
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1971-06-30. Planetary quarantine program Quarterly progress report, period ending 30 Jun. 1971. https://ntrs.nasa.gov/citations/19710021186
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