(3ef bVGjG GdJQGK GdYQHi(B: (3OQGSI fUjI fbOjI JMdjdjI ebGQfI GdfbO hGdfGbO (B/ s - (3aJMi GMeO YGeQs ([S.N] : (3efTGI GdeYGQa GdGSdGejI , s, 1985)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3JGQjN hfbOs