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Apparatus for heat-treating ball and roller bearings

✍ Scribed by V. V. Kokuev


Book ID
112387694
Publisher
Springer US
Year
1977
Tongue
English
Weight
163 KB
Volume
19
Category
Article
ISSN
0026-0673

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Dec., I92I.] U.S. BUREAU OF STANDARDS NOTES. 805 nitrite method of Holden and James. Each of these methods concentrated the erbium but not as rapidly as the nitrate fusion method. The best erbium fractions available contained considerable yttrium and probably small amounts of other rare earths. FRI