Waugh, Charles. <br/><br/>
brief comparison of the 1973 AISI L.R.F.D. steel building c-ode proposal with the 1974 N.K.B. proposed probabilistic me-thod / by Charles Waugh. 

 - Cambridge, Mass. : Engineering 
 - 42 p. 
 - Internal study report; 5 / Massachusetts Institute of Techn-ology .