| 词条 | Walter Seifert |
| 释义 | > Cologne school massacre {{R from merge}} 10 : 1921 births|1964 deaths|German mass murderers|Murderers who committed suicide|Suicides in Germany|Suicides by poison|Luftwaffe personnel of World War II|German prisoners of war in World War II|German murderers of children|German police officers |
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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。