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Sheppard, S.D. 1973. D/H, 13C/12C and 18O/16O isotope studies of megacryst and matrix minerals from Lesothan and South African kimberlites. International Kimberlite Conference: Extended Abstracts. 1, (Aug. 1973), 283–286. DOI:https://doi.org/10.29173/ikc908.