Indian standard: Code of practice for the instalation of electric bells and call system /
Indian standard: Code of practice for the instalation of electric bells and call system /
BIS.
- New Delhi : Bureau of Indian Standards , 1992.
- 15p;28cm
Includes bibliogrphies and index.
12345672
Indian standard
658.5620954 BUR
Includes bibliogrphies and index.
12345672
Indian standard
658.5620954 BUR