Marc Delafontaine
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Marc Delafontaine was a Swiss chemist who co-discovered holmium in 1878, with Jacques-Louis Soret and independently in 1879 with Per Teodor Cleve.
Marc Delafontaine was a Swiss chemist who co-discovered holmium in 1878, with Jacques-Louis Soret and independently in 1879 with Per Teodor Cleve.