(3GdJGQjN GdPi GMedg Ydi XgQi (B.(3GdLRA GdGhd (B: (3OQGSI MGdI (B/ s - (3SjO YhjSs ((3GdbGgQI (B: s (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1982)
Keywords: (3GdQLGd (B- (3JQGLes; (3SjO YhjS (B- (3GdePcQGJs; (3eUQ (B- (3GdGMhGd GdGLJeGYjIs; (3GdSjGSjhf GdeUQjhf (B- (3JQGLes