(3Mde GdSdWGf (B/ s - (3YHO GdMb, GfjSs ((3djHjG (B:s (3GdeQcR GdYGdej dOQGSGJ h GHMGK GdcJGH GdGNVQ,s, 1988)
Keywords: (3GdbUU GdYQHjIs; (3GdCOH GdYQHjs; (3COH GdCWaGds