(3GdHjGf hGdJHjjf (B((3GdLRA GdGhd hGdKGfi(B) / s - (3MSf TMGJgs; (3YHOGdSdGe eMeO gGQhfs; (3GdLGMX (B: (3GHhYKeGf YeQh Hf HMQ eMHhHs ([S.N] : (3ecJHI GdNGfLi , s, 1968)
Keywords: (3GdGOH GdYQHis; (3GdfKQ GdYQHis; (3GdQSGFd GdYQHjIs