TY  - BOOK
AU  - Roy, k.p; hajra choudury, s.k; hajra choudury, a.k & battacharyya, s.c
TI  - Elements of mechanical engineering
SN  - 81.85099.05.7
U1  - 621 Roy 
PY  - 1925///
CY  - Media promptors & publishers pvt.ltd, Mumbai
ER  -