(3WHGY GdMjhGf (B/ s - (3YHOGdQMef HOhis; (3GQSWhWGdjSs; (3jhMfG Hf GdHWQjbs ([S.N] : (3hcGdI GdeWHhYGJ , s, 1977)
Keywords: (3GdadSaIs; (3adSaI GQSWhs; (3GdadSaI GdjhfGfjIs