1. Samarium can also be obtained by reducing its oxide with lanthanum . 2. Examples include : rubidium, barium, uranium, and lanthanum . 3. Lanthanum is separated as a double salt with ammonium nitrate by crystallization.4. More economically viable alloys using mischmetal instead of lanthanum were soon developed. 5. This version was higher in lanthanum and lower in neodymium. 6. Monazite is an important ore for thorium, lanthanum , and cerium. 7. He discovered the elements lanthanum , erbium and terbium. 8. Cerium hexaboride, like lanthanum hexaboride, slowly evaporates during the cathode operation. 9. Giesel isolated from pitchblende a lanthanum -containing fraction which showed unique properties. 10. Each test released a plume of dispersed radioactive lanthanum .
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