(3dGFMI GdLeYjGJ hGdeDSSGJ GdNjQjI (B/s - (3GdSYhOjI(B.s (3eLdS GdhRQGA(B.s (3gjFI GdNHQGAs ((3GdQjGV (B:s (3eUdMI eWGHY GdMcheI,s, 1990)
(3jTJed Ydi cTGaGJ(B.s
Keywords: (3GdNOeI GdGLJeGYjIs -- (3bhGfjf hJTQjYGJs -- (3GdSYhOjIs; (3GdLeYjGJ GdNjQjIs -- (3bhGfjf hJTQjYGJs -- (3GdSYhOjIs