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情系关岭 科普
2011
Authors:  傅强
Adobe PDF(3382Kb)  |  Favorite  |  View/Download:114/26  |  Submit date:2014/01/09
恐龙灭绝之争又起(上) 科普
2010
Authors:  许汉奎
Adobe PDF(1968Kb)  |  Favorite  |  View/Download:45/10  |  Submit date:2014/04/10
化石精英——牙形刺 科普
2007
Authors:  王成源
Adobe PDF(201Kb)  |  Favorite  |  View/Download:171/51  |  Submit date:2012/08/30