TY  - BOOK
AU  - Mathur, M L.
AU  - Vaishwanar,R S  .
TI  - Engineering drawing and graphics / 
SN  - 81-86321-16-0
U1  - 604.2 
PY  - 1999///
CY  - New Delhi : 
PB  - Jain Brothers , 
ER  -