(3GdMjd h GdegGQGJ GdHQeLjI (B: (3EQTGOGJ h fUGFM Ydejg (B/ s - (3hGWS, djRGs; (3ghGQK, dSs; (3Gdehefj, MjOQ YHO GdMejOs ((3HjQhJ (B:s (3GdeDSSI GdYQHjI,s, 1991)
Keywords: (3GdMhGSjHs; (3HQGeL GdMGShHs; (3GdegGQGJ GdMGShHjIs; (3fGTFhf cHGQ (B(15-18) (3SfIs