Blueprints.

Audels answers on blue print reading for mechanics and builders Graham, Frank Duncan 1941 Basic blueprint reading and sketching Olivo, Thomas P. 2010 Blueprint reading Hoffman, K. O. 1983 Blueprint reading at work Rogers, William W. 1942 Blueprint reading for industry Brown, Walter C. 1983 Blueprint reading for machine technology Rayshich, Daniel 1985 Building trades blueprint reading Sundberg, Elmer W. 1973 Drawing, sketching and blueprint reading Coover, Shriver L. 1954 Plan reading for home builders Dalzell, J. Ralph 1972 Residential printreading Toenjes, Leonard P. 1987 Welding symbols AWS Technical Activities Committee 1968