(3CWdS GdQMdGJ (B/ s ((3Lfja (B:s (3OGQ GdeNJGQ ddWHGYI h GdfTQ h GdJhRjY,s, 1979)
Keywords: (3COH GdQMdGJs; (3GdCSaGQs; (3GdQMGdIs; (3fGTFhf cHGQ (B( 15 - 18 (3SfI (B)s