(3bGfhf GdJLGQ GdOhdi GdLOjO OQGSI JMdjdjI (B/ s - (3HgGA gdGd OShbi (B.s ((3GdbGgQI (B:s [(3O(B.(3f(B] . s, 1993)
Keywords: (3GdbGfhf GdJLGQi (B.s; (3GdbGfhf GdJLGQi GdOhdi (B.s; (3bGfhf GdJLGQI GdOhdi GdLOjO (B.s