(3MdGhI GdEjeGf aj VhA GdbQBf GdcQje hGdSfI GdUMjMI (B/s - (3GdgdGdj, Sdje Hf YjO Hf eMeOs 1377 (3g`(B-s ((3GdOeGe (B- (3GdSYhOjI (B:s (3ecJHI GHf GdLhRj,s, 1991)
Keywords: (3GdEjeGf s; (3CNdGb GdQShds; (3GdOYhI GdESdGejIs; (3hYX hEQTGOs