(3GdfXQjI GdYGeI dYPQ JLGhR MOhO Mb GdOaGY GdTQYi (B:s (3OQGSI JMdjdjI deHOG GdeTQhYjI GdLfGFjI ai GdbGfhf GdeUQi h GdebGQf (B/s - (3eMeO fYje aQMGJs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI ,s, 1981)
(3jTJed Ydj GQLGYGJ HHdjhLQGajI(B.s
(3HHdjhLQGajG (B: (3UaMGJ (B661 - 678.s
Keywords: (3GdOaGY GdTQYjs; (3GdbGfhf GdLfGFjs