Descriptor
| Educational Technology | 1 |
| Information Retrieval | 1 |
| Information Systems | 1 |
| Microfiche | 1 |
| Microfilm | 1 |
Source
| J Educ Data Process | 1 |
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J Educ Data Process, 1969
Discusses computer programs for aid in teaching, student diagnosis and learning developed by the National Cash Register Company. (MK)
Descriptors: Educational Technology, Information Retrieval, Information Systems, Microfiche
