项目管理:计划、进度和控制的系统方法,杨爱华,杨磊,王增东。
Kerzner H. Project Management: A System Approach to Planning, Scheduling, and.
它初建于清朝道光二十年(公元1840年),是进士杨以增的私家藏书楼,距今已有140余年历史。
Originally built in the 20th year of Qing Dynasty (1840 AD), Haiyuan Pavilion was the private library of Scholar Yang Yizeng, with more than 140 years history till now.
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