Basic activities of information retrieval
Subject indexing, index terms, and controlled vocabularies
Search files and searching mechanisms
Current awareness function
Performance criteria for information retrieval systems
Factors affecting the performance of an information retrieval system
Index languages, their components and characteristics
Toward completely mechanized information systems
Evaluating the operating efficiency of an information retrieval system
Analysis of the test data
Interpetation and application of the test data
Evaluating the economic efficiency of an information retrieval system
Interaction between an retrieval system and its users
Searching strategies.