../ solutions_set_6.pdf 25-Feb-1999 11:00 69710 solutions_set_6.ps 21-Feb-1999 13:16 142974 solutions_set_7.pdf 21-Mar-1999 15:39 86900 solutions_set_7.ps 21-Mar-1999 15:39 187407 solutions_set_8.pdf 06-Apr-1999 12:58 76286 solutions_set_8.ps 06-Apr-1999 12:58 182171