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dr-x 2 512 Jul 26 2007 ./ dr-x 4 512 Jul 26 2007 ../ -r-- 1 1800704 Jul 26 2007 chapter01.ppt -r-- 1 857600 Jul 26 2007 chapter02.ppt -r-- 1 1551872 Jul 26 2007 chapter03.ppt -r-- 1 432640 Jul 26 2007 chapter04.ppt -r-- 1 287232 Jul 26 2007 chapter05.ppt -r-- 1 313856 Jul 26 2007 chapter06.ppt -r-- 1 896512 Jul 26 2007 chapter07.ppt