(3GdJTQjYGJ GdGLJeGYjI (B:s (3JTQjY GdJYGhf (B/s - (3GdHGTG, eMeO aGQhbs ((3OeTb (B:s (3LGeYI OeTb,s, 1989)
(3jTJed Ydi edGMb(B.s
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdJYGhfs -- (3bhGfjf hJTQjYGJs -- (3ShQjGs; (3GdLeYjGJ GdJYGhfjI GdRQGYjIs -- (3bhGfjf hJTQjYGJs; (3GdLeYjGJ GdJYGhfjIs -- (3bhGfjf hJTQjYGJs