Structural.

The use of Steriography F. C.Phillips 1971 Theory of modern steel structures Grinter, Linton E. (Linton Elias), 1902- 1950 Theory of modern steel structures Grinter, Linton E. 1962 Theory of modern steel structures Grinter, Linton E. 1949 Theory of structural geology Gokhale, N. W. 2013 Treasury of philosophy Runes, Dagobert.D. 1955 Unified design of steel structures Louis F. Geschwindner, Judy Liu, Charles J. Carter 2012 Using steel wisely; a dissertation on the principles underlying the selection of the correct steel for any engineering application Pumphrey, William I 1958