人口与区域研究所杨云彦教授的人口、资源与环境教材，很有参考价值。

电磁式高频振动试验器介绍了其机械外观、系统方框图、振动器、放大器、DACTRON控制器等。

The book is intended for more advanced students of English. It is written mainly as a self-study book, but might also be used in class with a teacher. It revises some of the more difficult points of grammar that you will have already studied - such as when to use the, a/an or no article, and when to use the past simple or the present perfect - but will also introduce you to many more features of English grammar appropriate to an advanced level of study.

积分变换解题。内容仅供参考。

排水工程上册（第四版）的电子图书。

内蒙古大学重点课程建设结题报告。

量子力学电子教案，包括量子力学考试大纲、常用公式及重要参考书。

美国奥格.曼狄诺。

实用废水处理系统电子图书，主要研究几种容易维护和和机械设备简单的系统，且其设计是合理而实用。

废水治理工程技术。