The presetn paper is a sequel to the report in the preceding issue of this journal, and discusses improvents and extensions of PRINSE, a microcomputer program for the retrieval of peace research documents. Main improvemtns discussed here are as follows. Improvements of the main program PRINSE with the change of the operating system from N88 BASIC to MS-DOS. Development of a program to transform list of documents into PRINSE files, that is, files which can be read by PRINSE. (Input utility) Development of programs to output the list of documents arranged according to the alphabetical order of authors and keywords either to the printer or to the disk. (Author index and keyword index utilities)