(3GdhLg GdGNQ ddSdhc (B: s (3bQGAGJ aj eXGgQ GdGfMQGa GdGLJeGYi (B/ s - (3eUWai YeQ GdJjQs ((3djHjG (B: s (3eYgO GdGfJeGA GdYQHi , s, 1990)
Keywords: (3GOeGf GdeNOQGJs; (3GdLQjeIs; (3GdSdhc GdGLJeGYis; (3GdcMhds; (3GdeTGcd GdGLJeGYjIs; (3GdcMhd (B- (3JCKjQg Ydi GdLSes; (3GdLQjeI hGdeLQehf (B- (3djHjGs; (3GdYfa (B- (3djHjGs