TY  - BOOK
AU  - Dhawan, R K
TI  - A TEXTBOOK OF ENGINEERING DRAWING( GEOMETRICAL DRAWING)
U1  - 604.24 
PY  - 1997///
CY  - Newdelhi
PB  - S. CHAND & COMPANY LTD
KW  - lettering
KW  - conic sections
KW  - sectional views
ER  -