8 Puentes y conectores...................................................................................... 182
10 Obtención de ayuda.......................................................................................193
...................................................................................178
.........................................................................................................................178
........................................................................................................................ 178
............................................................................................................. 178
....................................................................................................................... 179
............................................................................................................ 182
..................................................................................... 184
..................................................................................... 184
.............................................................................................. 193
........................................................................................................ 193
................................................ 176
............................................................................ 177
.............................................................................. 180
.................................................................. 181
.........................................................................193
...................................... 180
......................180
........... 180