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3. 64Kri: P.I. Kripyakevich and I.I. Zalutskii, “Compounds of the Rare-Earth Metals with Aluminum and Their Crystalline Structures,”Akad. Nauk SSSR, Inst. Met. Trud., 144 (1964) in Russian; TR: AD-635, 829 (May 1966).
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