The Universal decimal classification a programmed instruction course
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
[College Park, Md.]
School of Library and Information Services, University of Maryland
[c1970]
|
| Cyfres: | Federation internationale de documentation
FID467 |
| Pynciau: |