(3JUeje GdSJjQjh ehShYI YGde GdCdcJQhfjGJ (B: s (3GdajOjh (B. (3cGejQG GdajOjh (B. (3GdGfJGL GdUhJj (B/ s - (3agej, Cejfs ((3HjQhJ (B:s (3OGQ GdQGJH GdLGeYjI,s, 1987)
Keywords: (3GdgfOSI GdCdcJQhfjIs; (3GdehShYGJs