Specification for ballasts for high pressure mercury vapour and low pressure sodium vapour discharge lamps /
Specification for ballasts for high pressure mercury vapour and low pressure sodium vapour discharge lamps /
- London : B.S.I., 1971.
- 42 p. : ill. ; 21 cm.
- BS 4782. 1971 .
0580065979 (sd) : £1.20 9780580065972: £1.20
Electric lighting, Mercury vapor.
Electric lighting, Sodium vapor.
High pressure mercury vapour discharge lamps Ballasts Specifications Low pressure sodium vapour discharge lamps Ballasts Specifications
0580065979 (sd) : £1.20 9780580065972: £1.20
Electric lighting, Mercury vapor.
Electric lighting, Sodium vapor.
High pressure mercury vapour discharge lamps Ballasts Specifications Low pressure sodium vapour discharge lamps Ballasts Specifications