Direct recording and reproducing materials for disk recording / by A. C. Keller
Wedi'i Gadw mewn:
| Superior document: | Bell telephone system B-998 |
|---|---|
| VerfasserIn: | |
| Place / Publishing House: | New York, NY : Bell Telephone Laboratories, 1937 |
| Blwyddyn Gyhoeddi: | 1937 |
| Iaith: | English |
| Cyfres: | Bell telephone system
B-998 |
| Disgrifiad Corfforoll: | 16 S.; graph. Darst.; 23 cm |
| Tagiau: |
Ychwanegu Tag
Dim Tagiau, Byddwch y cyntaf i dagio'r cofnod hwn!
|
| ac_no: | AC11429820 |
|---|---|
| Hierarchical level: | Monograph |
| Statement of Responsibility: | by A. C. Keller |