TY  - GEN
ED  - Sri Lanka Standards Institution,  Colombo LK
TI  - SLS 702 ; 1985 : Specification for electrical call bells and buzzers for indoor use
PY  - 1985///
CY  - Colombo
PB  - SLSI
KW  - a643.62
KW  - SRI LANKA-STNADARDS
KW  - STANDARDS-SRI LANKA
N1  - STD2885
ER  -