(3QSGdI GdUjGe hGdRcGI (B/s - (3eLdI GdhYj GdESdGej (B((3GdchjJ(B)s ([(3O(B. (3e(B.] :s (3eLdI GdhYj GdESdGej,s, 1976)
Keywords: (3GdRcGI (B((3abg ESdGej(B)s; (3GdUhe (B((3abg ESdGej(B)s; (3GdYHGOGJ (B((3abg ESdGej(B)s