TY  - BOOK
ED  - Indian Standards Institution
TI  - Indian standard dimensions for `o' rings and grooves for vacuum flanges
PY  - 1973///
CY  - New Delhi
PB  - Indian Standards Institution
KW  -  Standards 
KW  -  Vacuum Flanges
KW  - NASA Thesaurus 
N1  - IS 6838 : 1973
ER  -