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#DYK that rare earth elements (like Ce, Gd, La, Nd, Pr, Sm) are vital to modern technology and lifestyles? https://t.co/v6pUCm9a1V https://t.co/fmphG0Fw0N
#DYK that rare earth elements (like Ce, Gd, La, Nd, Pr, Sm) are vital to modern technology and lifestyles? https://t.co/v6pUCm9a1V https://t.co/fmphG0Fw0N