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Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)|January 1, 1992
Cometary origin of carbon and water on the terrestrial planetsA H DelsemmeAdvances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)|March 1, 1995
Cometary origin of the biosphere: a progress reportA H DelsemmeScience (New York, N.Y.)|June 11, 1971
Comets: production mechanisms of hydroxyl and hydrogen halosA H DelsemmeAdvances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)|January 1, 1992
Cometary habitats for primitive lifeM K Wallis, N C Wickramasinghe, F HoylePageof 1