TY - JOUR A1 - Hoover, r. b. T1 - Comets, carbonaceous meteorites, and the origin of the biosphere JO - Biogeosciences Discuss. J1 - BGD VL - 2006 SP - 23 EP - 70 Y1 - 2006/01/27 PB - Copernicus Publications SN - 1810-6285 UR - https://bg.copernicus.org/preprints/3/23/2006/ L1 - https://bg.copernicus.org/preprints/3/23/2006/bgd-3-23-2006.pdf DO - 10.5194/bgd-3-23-2006 ER -