Based on recent published doouments both from domestic and some of foreign publications, the.definituion of full-text information rettieval system, the research and development of full-text database, the pre-treatment techniques of full-text and the search strategy of .full-text information retrieval system are reviewed so as to making further development in computer information retrieval of China.

From the point of view of System Engineering the paper discusses several problems of document database creation: the project feasibility analysis, the data preparation with some methods for reducing manual labor intensity, and the document database circumstances and applications.

The role and position of computerized serials management system in the integ- rated computerized management system of library is described Some basic functions of the serials management system are put foward. It is considered that the performance of these functions is dependent on the internal data format in the computer. The paper discussed data structure of serials management system emphatically, analyzed in detail the relationship between the functions and the record formats of cataloging, back serials and current serials files and made some comparison with reported references.

Two kinds of fungicides, selected from the fifteen, the compound Duojunling (bavistin) agent-mixed Baijunqing (daconil) fungicides, and fungicides-WS88- 10/SC875 have been tested for three times in the research according to their den sittes by different methods. As a result, the selected fungicides can effectively prevent many sorts of moulds from being harmful to the books.