RARE EARTHS IN STEEL TECHNOLOGY
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[1] T. Gladman,et al. Sulphide shape control , 1979 .
[2] P. Waudby. Rare earth additions to steel , 1978 .
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[1] T. Gladman,et al. Sulphide shape control , 1979 .
[2] P. Waudby. Rare earth additions to steel , 1978 .