142 1.6) – ( 1008 $ PQ2M ') ( 2M 9>=B i ` C>$Y 4Q$2 7j (C-1990) +§ j7 +(1989 + ) |$)- (- ?\- (PLEN/2) 64 % QN [ r = § & (1989 + ) IC |$)- (- ?\- (PLEN/2) 64 % j HC7 ? =I JK- E7 &%* (%* (1982 +½ ] ) 1JW*C ( e)*C ='7 1\"6 }$2 f'% xW%* 6D6 j$ * F'G 3 +1\"6 J l[R 3 § 7UV ? MWX JK- ( P. / A F* B § BG 1 b' S ( § BG (. jg$- <&g$ < Q BG 3 t* f'% xW% r B 7 | P4 l[R E7 #DG C (U +. / A F* B 4 l[R = * 3 § 3 ? #( C 1 +½ ] ) 1JW*C ( e)*C ='7 1\"6 }$2 f'% xW%* xR lC $\"[- 4 &J j$ * j (1982 10 S. j «Z) ,. }D. j ~9/ . x|/ Z) x|/ =9 }$I H P(%* j 1JW*J ='$ (- 2 C }C9 +) fo 3 =e/ 17 Á 3 t* f'% xW% r = #. / E7 (6.& j P}$2/ =\" 0 1990 D& 31 = e +6m 3 +6' 9 &2 4 j$ & j +2- $- (2 0 +4 6 Z* (e ~9 1( _ / 1 (9 ]y$ D3 E F ' +4 }D ]* 6 Z& (e ~9 1( _ (%* E7 Rg] `I .. / § E7 R&%* (%* 3 we 0 6D6 }D E7 ; :=> .(1990) 7076/CA45 7074 j%$ ¦¦¦¦¦¦¦¦¦ __________________ 5' / 67+ +89 2\"... (1989 23 ) !#$ %&'#( )$* +,& -+ /0 ...\" : 10 . !; <