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几何原本. 第1-5卷 利玛窦 口述 徐光启 笔受 古籍古书网盘下载
《几何原本》（希腊语：Στοιχεῖα）又称《原本》。是古希腊数学家欧几里得所著的一部数学著作。它是欧洲数学的基础，总结了平面几何五大公设，被广泛的认为是历史上
张氏医通. 卷之1-2 释 骨 古籍古书网盘下载
国朝沈彤撰。彤有《周官禄田考》，已著录。是编取《内经》所载人身诸骨，参以他书所说，胪而释之，中间多所辨正。如谓经筋篇足少阳之脉，循耳后上额角，额字乃头字之讹。谓
