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| Information Systems | 2 |
| Information Theory | 2 |
| Chemistry | 1 |
| Computers | 1 |
| Documentation | 1 |
| Engineering | 1 |
| Indexing | 1 |
| Information Centers | 1 |
| Information Dissemination | 1 |
| Information Needs | 1 |
| Information Retrieval | 1 |
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| Science | 2 |
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Peer reviewedArnett, Edward M. – Science, 1970
Descriptors: Chemistry, Computers, Documentation, Information Centers
Peer reviewedSchneider, John H. – Science, 1971
Reviews characteristics and efficiency of types of information retrieval systems, and concludes that for selective dissemination of information from computer tapes keyword indexing is less efficient than enumerative hierarchical systems which require single hit searching. (AL)
Descriptors: Engineering, Indexing, Information Dissemination, Information Retrieval
