00309 a2200097 4500082001500000100002400015245006800039260004200107300003100149650003100180 a624.15 RAJ aRaj,P. Purushothama asoil mechanics and foundation engineering /cP.Purushothama Raj aNew Delhi :cPearson education,b2008 axvi,824p. :bill . ;c25cm aSoil mechanicsyFoundation