1
Be : beryllium. Supplement vol. B4. Compounds with carbon to francium : system number 26.
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2
Be : beryllium. Supplement vol. D1, 1. Coordination compounds : system number 26 /
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3
Be : beryllium. Supplement vol. A3. The element, physical properties (continued) and electrochemical behavior : system number 26.
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4
Be : beryllium. Supplement vol. A2. The element, physical properties : system number 26.
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5
Beryllium : System-Nummer 26.
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