1 หนังสืออิเล็กทรอนิกส์โดย Edward E Feuerstein
Edward E Feuerstein: Germanium
Germanium is a relatively scarce element found in the Earth’s crust at a concentration of 0.007% in the form of bromides, chlorides, fluorides, iodides, hydrides, oxides, selenides, sulfides and …
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