TY  - BOOK
AU  - Sethi, G S  .
AU  - Kuldipkakkar,.
TI  - Workshop calculation and science / 
SN  - 0  07  451906  9
U1  - 621.9 
PY  - 1986///
CY  - New Delhi : 
PB  - Tata Mc-Graw Hill Publishing Company , 
ER  -