(3JYQjH GdWH deGPG ? heJi ? hcja ? (B/s - (3GdJcQjJj, QGLj YHGS s ((3HZOGO(B, (3GdYQGb (B:s (3OGQ GdTDhf GdKbGajI GdYGeI ,s, 1991)
Keywords: (3GdJQLeI GdYQHjI s