b
uT

---

. ,

---

4Y v

---

8z0 2f

---

. a B

---

---

I

---

Md
,

---

FIG. 1
.

---

5

---

881

---

---

7, 3. 99. ,
.

---

, . . P , hV. GyqjA
6l
. x

---

i9G7

---

,

---

---

, 8

---

2,

---

y. .

---

x , . . . .

---

y
su 6
d. jmd.

---

v3, K
F CpVUkY. ,

---

1 , H. 2, k18 M9

---

dJ, 5HYd
r
, Ky
,

---

. O

---

---

63,

---

.

---

0

,

W
, Bj, , . .
. .
, , 7, d,

---

N
03A5n
.
, ,




j , 7
o, n b. s
0. , G, y. HwL
, I , q5

---

S2

---

D