fig 23
fig23




fig 24
fig24




fig 25
fig25




fig 26
fig26




fig 27
fig27




Fig 28
Fig28




Fig 29
Fig29




Fig 30
Fig30




Fig 30a
Fig30a




fig 31
fig31




fig 32
fig32




Fig 33
Fig33




Fig 33a
Fig33a




Fig 34
Fig34




Fig 35
Fig35




Fig 36
Fig36




Fig 37
Fig37




Fig 38
Fig38




gra 7
gra7




gra 11
gra11




gra 13
gra13




gra 111
gra111




gra 112
gra112