BS 4435 : Pt. 1 : 1969 : Specification for power supply units for extra low voltage output : units for indoor use
- London BRITISH STANDARDS INSTITUTION 1969
- 16p.
STD1579
BS 4435 : Pt. 1 : 1969
621.31.027.2:688.7 /
STD1579
BS 4435 : Pt. 1 : 1969
621.31.027.2:688.7 /