1 
Fs N _ 0 -. ich. 5 
AA 
= a 
2 in 
. sr . ; < J 
Ba ; 3 
7 2 
3 
4% 3 
+ 2 
D i 
T 
’ oJ 
wy 
- Jy 
SD ; N 
+ 
© — 
@ 
on 
3 nn 
= 
3 
na . 
eS N 
A u) 
3 5 
= = 
bn 
4 x 
© x 
Z = ; = 
ND 2 
KS + © 
t 3 
2 
0 
+ + 
a 
') 
„2 X 
i © 
. ~ 
J 
x 
4 
= © 
m 
2 J 
2 
1 
a = 
„A 4 
3 3 
© ) 
X 4 
Prakt. Met. Sonderbd. 21 (1990) 
1523