The choice of switchgear : for main- and sub-stations /
Wedi'i Gadw mewn:
| Prif Awdur: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
London :
Blackie and Son,
1924.
|
| Pynciau: |
| Disgrifiad o'r Eitem: | Includes index. |
|---|---|
| Disgrifiad Corfforoll: | 292 p., [3] folded leaves of plates : ill., 1 plan ; 26 cm. |