《示性类》内容简介：The text which follows is based mostly on lectures at PrincetonUniversity in 1957. The senior author wishes to apologize for the delayin publication.The theory of characteristic classes began in the year 1935 with almostsimultaneous work by HASSLER WHITNEY in the United States andEDUARD STIEFEL in Switzerland. StiefeI's thesis, written under thedirection of Heinz Hopf, introduced and studied certain "characteristic"homology classes determined by the tangent bundle of a smooth manifold.Whitney, then at Harvard University, treated the case of an arbitrary spherebundle. Somewhat later he invented the language of cohomology theory,hence the concept of a characteristic cohomology class, and proved thebasic product theorem.
《保护性耕作技术》在国际上产生了较大影响，被联合国粮农组织翻译成5种语言传播。2014年《保护性耕作技术》科普图书荣获国家科技进步奖二等奖。《保护性耕作经验交流—应对气候变化》（英文版）是以原中文版为基础，针对非洲地区的特点以及当地的农作物特点，由出版社与世界银行合作，共同开发。本书由中国农业大学保护性耕作课题组李洪文教授组织编写，由蒋和平担任本书插图的原创绘制工作。本书内容活泼，图文并茂，通俗易懂，对指导非洲地区的农业生产有较强的实际作用。
