Casagrande, A. <br/><br/>
Fourth report on investigation of stress-deformation and st-rength characteristics of compacted clays / by A. Casagrand-e and S.J. Poulos. 

 - Cambridge, Mass. : Harvard University 
 - 82 p. 
 - Harvard soil mechanics Series ; no. 74 .
<br/><br/> "A research project sponsored by the U.S. waterways Experim-ent Station in cooperation with Harvard University"."Final report on Contract Nos. DA-22-079-CIVENG-62-3 and DA--22-079-CIVENG-63-8".