SLS 690 : pt.4 : 1985 : Graphical symbols used in electrotechnology, pt.4 - Machines, transformers, primary cells and accumulators.
- Colombo SLSI 1985
- 28 p.
STD2878
SLS 690 PART 4
a003.62:621.3
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA
STD2878
SLS 690 PART 4
a003.62:621.3
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA