(3GdTYQ aj GWGQ GdYUQ GdKhQj (B/ s - (3GSeGYjd, YR GdOjf,s ((3HjQhJ, dHfGf (B:s (3OGQ Gdbde,s, 1974)
Keywords: (3GdTYQ GdMeGSj GdYQHjs -- (3JGQjN hfbOs -- (3GdYUQ GdMOjK(B.s