(3egeI djhf QhT aj GdLRGFQ h GdeZQH (B1832-1847 /s - (3efGUQjI , jhSa s ((3GdLRGFQ (B:s (3GdeDSSI GdhWfjI ddcJGH ,s, 1990)
Keywords: (3GdLRGFQ s; (3djhf s; (3QhT s; (3egeIs