(3GdGdSjfI GdJhdjOjI hGdJMhjdjI hbhGYO GddZI GdYQHjI(B((3GdLedI GdHSjWI(B) / s - (3ejTGd RcQjGs ([S.N] : (3GdeDSSI GdLGeYjI ddOQGSGJ hGdfTQ hGdJhRjY , s, 1986)
Keywords: (3GdfMhs; (3GddZI GdYQHjIs