(3LQGFe GdJTQO hGdGTJHGg abgG hbVGA WHbG ddeQShe HbGfhf Qbe (B98 (3dSfI (B1945 (3GdeYOd HGdbhGfjf (B157 (3dSfI (B1959(3, (B110 (3dSfI (B1980(3, (B195 (3dSfI (B1983 (3heG jQJHW Hg ef CMcGe eQGbHI GdTQWI (B/s - (3GdHcQj, eMeO YRejs ((3GdefUhQI, eUQ (B:s (3OGQ GdhaGA ddWHGYI hGdfTQ hGdJhRjY,s, 1988)
Keywords: (3GdJTQOs -- (3bhGfjf hJTQjYGJs -- (3eUQs; (3GdQbGHI GdbVGFjIs -- (3eUQs