TY  - BOOK
AU  - Khanna, O P .
TI  - The text book of welding technology 
SN  - 9788189928360
U1  - 671.52 
PY  - 1983///
PY  - 2011///
CY  - New Delhi : 
PB  - Dhanpat Rai Publishing Co. Pvt. Ltd. , 
ER  -