(3GSJbdGd GdeMGeGI hMbhb GdEfSGf (B:s (3OQGSI ebGQfI (B/s - (3TMGJI, eMeO fhQs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1987)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdeMGeGIs -- (3bhGfjf hJTQjYGJs -- (3eUQs; (3Mbhb GdEfSGfs -- (3bhGfjf hJTQjYGJs -- (3eUQs