TY - GEN AU - Gupta, C. K. AU - Krishnamurthy, N. TI - Extractive metallurgy of rare earths SN - 0415333407 AV - TN693.R3 G87 2004 PY - 2005/// CY - Boca Raton, Fla. PB - CRC Press KW - Rare earth metals N1 - ABPR records; BIP ER -