(3GdefGN hRQGYI GdJaGM hGdMeVjGJ ai dHfGf (B/ s - (3jhSa YHOGdeLjO aGjOs ([S.N] : (3LGeYI HjQhJ GdYQHjI , s, 1973)
Keywords: (3GdRQGYIs; (3dHfGfs; (3GdefGNs; (3GdHSGJjfs; (3GdJaGMs; (3GdMeVjGJs