TY - RPRT TI - Asteroidal Differentiation Processes Deduced from Ultramafic Achondrite Ureilite Meteorites AU - Downes, Hilary AU - Mittlefehldt, David W. AU - Hudson, Pierre AU - Romanek, Christopher S. AU - Franchi, Ian PY - 2006 UR - https://ntrs.nasa.gov/citations/20060056235 ID - 20060056235 ER -