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Sondermetalle
Krauß, Ulrich; Kruszona, Manfred; Schmidt, Helmut; … - 1989
Persistent link: https://www.econbiz.de/10000336028
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Titan
Schmidt, Helmut (contributor) - 1980
Persistent link: https://www.econbiz.de/10013281948
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Kupfer
Cissarz, Arnold; Grebe, Willi Herbert; Kruszona, Manfred; … - Bundesanstalt für Bodenforschung; Institut für … - 1972
Persistent link: https://www.econbiz.de/10013281955
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Vanadium
Schmidt, Helmut (contributor) - 1981
Persistent link: https://www.econbiz.de/10013281957
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Asbest
Schmidt, Helmut (contributor) - 1981
Persistent link: https://www.econbiz.de/10013281968