(3HdGO GdTGe aj GdYUQ GdYHGSj (B132(3g (B/ 750 (3e (B_ 451 (3g` (B/ 1059(3e (B: s (3GdbSe GdYQHj (B/ s - (3GdHNjJ, eMeO YOfGfs; (3GdYHGOj, eMeO jhfSs; (3GdeDJeQ GdOhdj dJGQjN HdGO GdTGe (B(5 : 1990 : (3YeGf(B)s ((3YeGf (B:s (3dLfI JGQjN HdGO GdTGe,s, 1992)
Keywords: (3GdYHGSjhfs; (3eDJeQGJs; (3HdGO GdTGes; (3JGQjNs; (3GdYUQ GdYHGSjs