TY  - BOOK
AU  - Dhawan, R.K.
TI  - A Textbook Of Machine Drawing: In First Angle Projection 
SN  - 9788121908245
U1  - 621.815 
PY  - 2016///
CY  - New Delhi
PB  - S.Chand
KW  - Principles of mechanism 
KW  - Technology 
ER  -