SLS 490 : Part 2 : 1980 : Specification for shellac part 2 : Machine - made shellac
- Colombo BUREAU OF CEYLON STANDARDS 1980
- 35p.
STD2685
SLS 490 : Part 2 : 1980
a668.447.31
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA
668.447.31
STD2685
SLS 490 : Part 2 : 1980
a668.447.31
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA
668.447.31