Tomado de:
https://www.google.com.co/search?q=SOLDADURA+DE+ARCO+MAPA+CONCEPTUAL&tbm=isch&tbo=u&source=univ&sa=X&ei=zp5XUsjyB7T_4AO254HoAQ&ved=0CDYQsAQ&biw=1920&bih=953#facrc=_&imgrc=1nOvapBvt3tfDM%3A%3BU5fF_lBrmBZfFM%3Bhttp%253A%252F%252Fpaobuitrago.edublogs.org%252Ffiles%252F2010%252F09%252FMAPA-CONCEPTUAL-SOLDADURA.jpg%3Bhttp%253A%252F%252Fpaobuitrago.edublogs.org%252F%3B2115%3B1499


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