TY  - BOOK
AU  - Bureau of Indian Standards[BIS]
TI  - IS:10990-[Pt.1]-1991: ISO:6412-[Pt.1]-1989. Indian standard technical drawings : simplified representation of pipelines. Pt.1 : general rules and orthogonal representation
U1  - IS CODE 
PY  - 1991///
CY  - New Delhi
PB  - Bureau of Indian Standards
ER  -