(3agQS GdcJGH GdebOS (B/ s - (3HhSJ, LhQLs ((3HjQhJ (B:s (3ecJHI GdeTYd,s, 1981)
(3h gh bGehS jSJOd Hg ef CdaGX GdcJGH GdebOS Ydi ehGVjY BjGJgs
Keywords: (3GdJhQGIs; (3GdagGQSs; (3GdcJH GdebOSIs