(3GbJUGOjGJ GdCYeGd (B/s - (3Jhajb, Lejd CMeO s; (3bQjUI, UHMj JGOQSs; (3TQja, Ydjs ((3GdEScfOQjI, eUQ (B:s (3OGQ GdeWHhYGJ GdLGeYjI,s, 1979)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
(3HHdjhLQGajI (B: (3UaMI (B476-480.s
Keywords: (3GdGbJUGO GdEOGQjs; (3EOGQI GdCYeGds -- (3LhGfH GbJUGOjIs; (3GJNGP GdbQGQGJs