TY  - BOOK
AU  - Hart,Richard N.
TI  - Welding: theory, practice, apparatus and tests, electric, thermit and hot-flame processes / 
PY  - 1914///
CY  - New York : 
PB  - McGraw-Hill book company, inc.
KW  - SOLDADURA
UR  - https://archive.org/details/weldingtheorypra00hart/page/n7/mode/2up
ER  -