(3GdLQjeI (B/ s - (3eGQcjRjg, LGf s (3eDda(B.s ((3HjQhJ ;s (3HGQjS (B:s (3efThQGJ YhjOGJ,s, 1983)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B. s
Keywords: (3Yde GdELQGe s; (3GdLQjeI hGdeLQehfs