Discusses the multilevel information system (MLIS), a retrieval system that integrates functions typical for database management systems and retrieval-oriented systems and provides several levels of data accessing, each developed for a different class of users. Twenty-two sources are cited. (FM)

Computer routines designed to determine if a song already exists in a song file data base are described. Written in FORTRAN IV, SONG FILE DATA MATCH compares the note sequence of songs in the data base and the one to be added to it. Information is then presented to the user which analyzes the sequence of notes and compares them to other songs.…

The development of microform-based information storage and retrieval systems is discussed, and the comparative advantages and costs of various approaches are considered. A proposed computer system--Archival Information Dissemination System (AIDS)--to support microform retrieval is outlined. Included are diagrams of sequential flows of information…