TY  - BOOK
AU  - Aggarwal,M.L.
AU  - Vierck,Charles J.
AU  - Aggarwal, R.
AU  - Garg, R. K.
TI  - A textbook of engineering drawing according to SP: 46 : 1988
PY  - 1998///
CY  - New Dehli
PB  - Dhanpat Rai
KW  - Mechanical drawing
ER  -