Druzhinin, G. V.
| Title | Author | Description | Price | Buy | hf:tags |
|---|---|---|---|---|---|
| Time Relays | Druzhinin, G. V. | viii + 80pp., text ills., diags., appends., Inc. magnetic amplifiers, bimetallic time relays, motor-type & semiconductor thermoresistances | $38.00 | druzhinin-g-v | |
| Time Relays | Druzhinin, G. V. | viii + 80pp., text ills., diags., appends., Inc. magnetic amplifiers, bimetallic time relays, motor-type & semiconductor thermoresistances | $38.00 | druzhinin-g-v |