(3hbGFY fOhI GdfXe GdGSdGejI (B:s (3GHhXHi (B12-20 (3UaQ (B1405 (3g` (B- 11-13 (3fhaeHQ (B1984 (3e`(B/ s - (3fOhI GdfXe GdGSdGejI(B( : s 18-20 (3UaQ (B1405(3g` (B- 11-13 (3fhaeHQ (B1984 (3e` (B: s (3GHhXHi(B)s ((3GdQjGV (B: s (3ecJH GdJQHjI GdYQHi dOhd GdNdjL (B: s, 1987)
(3jTJed Ydi GQLGYGJ HHdjhLQGajIs
Keywords: (3GdJGQjN GdGSdGeis -- (3GdSjGSI h GdMcheIs