(3gjcd hMjGI eMeO efgL ai OQGSI GdJGQjN GdGSdGei (B/ s - (3MSjf ahRi GdfLGQs ([S.N] : (3ecJHI GdGfLdhGdeUQjI , s, 1970)
Keywords: (3GdSjQI GdfHhjIs; (3GdJGQjN GdGSdGeis; (3eMeO MSfjf gjcds