Accurancy of modal superposition for one-dimensional soil a-mplification analysis / by Robert V. Whitman.........[et al-]. 

 - Cambridge, Mass. : g, Department of Civil Engineering 
 - 17 p. 
 - Structures publication; No. 352 / Masssachusetts Institute - of Technology. .
<br/><br/> "Presented at International Conference on Microzonation, oc-tober 30 - November 3, 1972, Seattle, Washington".