^^ax,^c(lc IV. 
tLitiio.lc.'. Ll% c^oaoLc ^jcoroc^lc^i^ 
O 9^cC 
e^oMic XKXVn 
I 
C’ 1.|’0 |.XVt 
l-’IGUKE 1 
C’cvrJc Î'U Æv.V^.., 
?b. tS U-xUi’ici 
FIGURE 2 
