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jul 13, 1866 - 厄恩斯特·赫克尔Ernst. Haeckel 1866

Description:

Ernst Haeckel's Biogenetic Law (1866)

Added to timeline:

ecology history

ByJoey Zhouyuan Li

25 Feb 2018

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358

Date:

jul 13, 1866

Now

~ 159 years ago

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