(3OQGSI bhGfjf GdeNOQGJ GdYQHjI (B/ s - (3GdefXeI GdYQHjI ddOaGY GdELJeGYj VO GdLQjeI , GdecJH GdYQHj dTDhf GdeNOQGJ (B((3YeGf(B)s ((3YeGf (B:s (3GdefXeI GdYQHjI ddOaGY GdELJeGYj VO GdLQjeI (B- (3GdecJH GdYQHj dTDhf GdeNOQGJ,s, 1981)
Keywords: (3GdbGfhf GdLfGFjs; (3GdHdOGf GdYQHjIs; (3GdbGfhf GdOhdjs; (3GdbGfhf GdYGes; (3GdeNOQGJs