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C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B19/00—Selenium; Tellurium; Compounds thereof
C01B19/008—Salts of oxyacids of selenium or tellurium
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FR544990D1921-12-231921-12-22Procédé de fabrication des sélénides ou des tellurides des métaux à l'état colloïdal ou en solution çolloïdale
ExpiredFR544990A
(fr)