Horizontal welding - two superimposed beads - flat position
Horizontal welding - two superimposed beads - flat position
- Geneva International Labour Organisation 1980
- [various pagings] : ill. ; 33 cm. 33 cm
9221045781
Welding
TS 227 .T9 I46 1980
9221045781
Welding
TS 227 .T9 I46 1980