TY  - GEN
ED  - BUREAU OF CEYLON STANDARDS
TI  - SLS 546 : 1981 : Specification for general writing Lead pencils
PY  - 1981///
CY  - Colombo
PB  - BCS
KW  - a686.863.3
KW  - SRI LANKA-STANDARDS
KW  - STANDARDS-SRI LANKA
N1  - STD2740
ER  -