SLS : 748 : 1986 : Specification for ground rock-phosphate (fertilizer grade)
- Colombo SRI LANKA STANDARDS INSTITUTION 1986
- 07 p.
STD2920
SLS 748 : 1986
a631.85
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA
STD2920
SLS 748 : 1986
a631.85
SRI LANKA-STANDARDS
STANDARDS-SRI LANKA