(3fXGe GdVQGFH Ydj GdONd aj eUQ (B:s (3habG ddJYOjdGJ GdJj JVefgG GdbGfhf Qbe (B46 (3dSfI (B1987 /s - (3TQja QeSjS JcdGs ((3GdbGgQI (B:s (3OGQ GdacQ GdYQHj , s, 1979)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdVQGFH(B.s; (3GdedjI GdYGeI hGdJTQjY GdVQjHjs