(3LeGYI GdOjhGf TcQi (B-(3GdeGRfi(B- (3GdYbGO (B/ s - (3jSQi eMeO SdGeIs ([S.N] : (3eDSSI GdKbGaIGdLGeYjI ddWHY hGdfTQ , s, 1977)
Keywords: (3GdGOH GdYQHis; (3YHGS eMehO GdYbGOs; (3GHQGgje YHOGdbGOQ GdeGRfis; (3YHOGdQMef TcQis