Casagrande, Arthur. <br/><br/>
Clasification and identification of soils / by Arthur Casag-rande. 

 - Cambridge, Mass. : Harvard University, Graduate School of Engineering 
 - [27] p. 783-810 p. 
 - Harvard soil mechanics Series ; no. 29 .
<br/><br/> "Reprinted from proceedings of the American Society of Civi-l Engineers, Volume 73, 1947, pages 783-810".