TY  - BOOK
AU  - Bureau of Indian Standards
TI  - Technical Drawings Abbreviations and Symbols for Use in Technical Drawings (IS : 11670 - 1993)
U1  - IS : 11670 - 1993 
PY  - 1993///
CY  - New Delhi
PB  - Bureau of Indian Standards
KW  - Indian Standard - IT
N1  - IS : 11670 - 1993
ER  -