(3GdJYhjV ai GdeSDdjg GdGOGQjg (B:s (3OQGSg ebGQfg ai VD GMcGe eLdS GdOhdg GdaQfSi hGdeUQj (B/s - (3eMeO GfS bGSe LYaQs ((3GdbGgQg (B:s (3OGQ GdfgVg GdYQHjg(B,s, 1987)
(3jTJed Ydi GQLGYGJ HHdjhLdQGajgs
Keywords: (3GdeSFhdjI GdEOGQjIs