Sorry if this has been discussed but I did a search and came up empty. Years ago, when I was taking welding engineering classes, the instructor showed us a small book that was described as "the definitive welding industry guide" or words to that effect.

Of course, being the air headed student, I didn't pay much attention and never bought the book. Now, being more mature and thoughtful, I've re-considered and would really like to have a copy.

Any ideas what that book was/is?