Information selection systems retrieval replica copies; a-state-of-the-art report
Wedi'i Gadw mewn:
| OCLC: | 1708587 |
|---|---|
| Prif Awdur: | |
| Awduron Eraill: | |
| Iaith: | English |
| Cyhoeddwyd: |
[Washington,
U.S. Dept. of Commerce, National Bureau of Standards]
1961.
|
| Cyfres: | NBS technical note
157. |
| Pynciau: | |
| Fformat: | Dogfen y Llywodraeth Monograph Note that CRL will digitize material from the collection when copyright allows. |
| Disgrifiad Corfforoll: | iv, 172 p. illus., diagrs. 26 cm. |
|---|---|
| Llyfryddiaeth: | Bibliography: p. 117-148. |