(3GdHGdhfGJ h GdWGFQGJ (B/ s ((3GdbGgQI (B:s (3OGQ GdeYGQa,s, 1992)
Keywords: (3GdWGFQGJs; (3SjchdhLjI GdWjQGfs; (3fGTFhf UZGQ (B(10-14 (3SfI(B)s