1052-Seminar on the History of Water Conservancy in China-4A003

Period：2017-02-01~2017-08-01

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1041-Homeland Education-00511

Period：2015-08-01~2016-01-31

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1011-The discuss of History seminar-4A010

Period：2012-09-10~2013-01-31

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1002-The discuss of History seminar-4A013

Period：2012-02-06~2012-07-31

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992-The discuss of History seminar-4A013

Period：2011-02-07~2011-07-31

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