found: Random House(rare earth: the oxide of any of the rare-earth elements contained in various minerals)
found: McGraw-Hill dict. sci. tech.(rare earth mineral: a mineral having a high concentration of rare earth elements: examples: monazite, xenotime, bastnaesite)
found: Gloss. geol.(rare earths: oxides of a series of 15 metallic elements from lanthanum to lutetium, and of yttrium, thorium, and scandium)
found: ASTI(Rare earths)
found: Engr. index(Rare earths)
found: TEST(Rare earth minerals UF Rare earths)
found: U.S. Cong. House. Comm. on Science and Technology (2007). Rare Earths and Critical Materials Revitalization Act of 2010, 2010:p. 1 (rare earth materials) p. 2 (the term "rare earth materials" means any of the following chemical elements in any of their physical forms or chemical combinations: scandium ...) p. 5 (rare earth materials, or rare earths, are critical componenets ...)
found: Wong, H. Nano-CMOS gate dielectric engineering, 2012:table of contents (rare earth metal oxides)
found: Wang, R. Rare-earth metal oxides for automotive emission reduction technology, 2012, viewed online Nov. 29, 2012:slide 2 (rare-earth and transition metal oxides
found: Hussein, G.A.M. Rare earth metal oxides, in Journal of analytical and applied pyrolysis, Sept. 1996, viewed online Nov. 29, 2012:p. 111 (Rare earth metal oxides; rare earth oxide precursors) p. 112 (rare earth (RE) metal oxides (lanthanide oxides); RE oxides; RE metal oxides)
