(3GOHGA GdYQH ai GdLGgdjg hUOQ GdGSdGe (B/ s - (3GdHSJGfi(B: (3HWQS Hf HhdS Hf YHO Gddgs ([S.N] : (3OGQ fXjQ YHhO , s, 1989)
Keywords: (3GdYUQ GdLGgdis; (3GdGOH GdYQHi (B- (3eLehYGJs