(3ehSjbG GdTYQ GdYQHi (B/ s - (3GdfYeGf GdbGVis; (3hMjO YHO GdMcje GdLeds ([S.N] : (3OGQ GdKbGaI ddfTQ hGdJhRjY , s, 1980)
Keywords: (3GdTYQ GdYQHis; (3GdGOH GdYQHis; (3JGQjN hfbOs