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- [28] NON-FERROUS-METALS IMPORTS AND EXPORTS BY FRG IN 1973 PRODUCTION OF NON-FERROUS-METALS INDUSTRY METALL, 1974, 28 (05): : 535 - 535
- [29] NON-FERROUS-METALS, ANORGANIC AND ORGANIC MATERIALS RESISTANT TO FLUORIDES METALL, 1986, 40 (03): : 257 - 262