SLS : 124 : 1971 : Specification for test sieves (Metric units)
- Colombo Bureau of Ceylon Standards 1971
- 29 p.
STD2309
C.S. 124 : 1971
a621.928
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA
STD2309
C.S. 124 : 1971
a621.928
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA