Strong motion earthquake accelerograms : digitized and plot-ted data : volume 1 uncorrected accelerograms, part R : acc-elerograms IR244 througth IR254 / California Institute of T-echnology. 

 - Pasadena, Calif. : Research Laboratory 
 - 296 p. 
 - [Report] ; no. EERL 73-23 / CALTEC, Earthquake Engineering - Research Laboratory .