(3OQGSI aj Yde GdELQGe hGdYbGH (B/s - (3CHh YGeQ, eMeO Rcjs ((3HjQhJ (B:s (3GdOGQ GdLGeYjI,s, 1982)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3bGfhf GdYbhHGJs; (3GdLQjeI hGdeLQehfs