(3eMGhQGJ eYGUQI ai GdeSQM GdYQHi (B/ s - (3SejQ GdMcjes ([S.N] : (3GdeWHYI GdMOjKI , s, 1979)
Keywords: (3Gdafhf GdeSQMjIs; (3GdeSQM GdYQHis; (3JGQjN hfbOs