| 词条 | Willem Alberda van Ekenstein |
| 释义 | > Lobry de Bruyn–van Ekenstein transformation 7 : 1858 births|1937 deaths|Dutch chemists|University of Amsterdam faculty|University of Groningen faculty|People from Groningen (city)|Delft University of Technology alumni |
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开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。