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Supplement to: Michel, Helen V; Asaro, Frank; Alvarez, Walter; Alvarez, Luis W (1985): Elemental profile of iridium and other elements near the Cretaceous/Tertiary boundary in Hole 577B. In: Heath GR; Burckle LH; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 86, 533-538, https://doi.org/10.2973/dsdp.proc.86.121.1985
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yr:1985
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