000 00305 a2200121 4500
080 _a546.65
_bY 65 R
245 1 _aRare-earth elements and their compounds
_cby D.M. Yost, et. al.
260 _aNew York
_c1950
650 _aRare-Earth Elements
100 1 _aYost, D.M.
_d
300 _a92 p.
901 _a33506
999 _c26903
_d26903