(3fMh EOGQI JQHhjI hGYjI (B/ s - (3Ydj bQGbRI, eMehO YHO GdbGOQs ((3HjQhJ (B:s (3OGQ GdacQ GddHfGfj , OGQ GdhSGe,s, 1987)
Keywords: (3GdJQHjI h GdJYdjes; (3adSaI h fXQjGJs