Relationships between soil conditions and earthquake groud -motions in Mexico City in the earthquake of Sept. 19 1985 /- by H. Bolton Seed... [et al.] 

 - Berkeley, Calif. : e Engineering Research Center 
 - 119 p. 
 - Report ; No. UCB / EERC 87-15 .
<br/><br/> "October 1987""A report on research sponsored by the National Science Fou-ndation"