(3SjWQI ESQGFjd Ydi GdhdGjGJ GdeJMOI GdCejQcjI (B/ s - (3ZdjeI, fUGQs ((3HjQhJ (B:s (3GdeDSSI GdLGeYjI ddOQGSGJ h GdfTQ h GdJhRjY,s, 1981)
Keywords: (3GdUgjhfjIs; (3GdjghO GdCejQcjhfs