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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

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